How to solve X²-X-42uing
using Fertoning Polynomials

Answers

Answer 1

Answer:

x = - 6, x = 7

Step-by-step explanation:

Begin by equating to zero

x² - x - 42 = 0

Consider the factors of the constant term (- 42) which sum to give the coefficient of the x- term (- 1)

The factors are - 7 and + 6 , since

- 7 × + 6 = - 42 and - 7 + 6 = - 1 , then

(x - 7)(x + 6) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 6 = 0 ⇒ x = - 6

x - 7 = 0 ⇒ x = 7


Related Questions

Multiply the two binomials.
(3x + 5)(4x - 1)

HELP PLS

Answers

Answer:

12x² + 17x - 5

Step-by-step explanation:

Given

(3x + 5)(4x - 1)

Each term in the second factor is multiplied by each term in the first factor, that is

3x(4x - 1) + 5(4x - 1) ← distribute parenthesis

= 12x² - 3x + 20x - 5 ← collect like terms

= 12x² + 17x - 5

What is the most accurate definition for FACTORS?

Answers

Answer:

A number that can go into another number without a remainder.

Step-by-step explanation:

Answer:

actor definition, one of the elements contributing to a particular result or situation: Poverty is only one of the factors in crime.

help btw it needs to be rounded to the hundredths

Answers

Answer:

Hewo!!!

The answer is 9.1 or if you don't want a decimal then, 9.

Step-by-step explanation:

10%          ?

___        ___

100          91

First:

you make them into fractions (hint: 100 is ALWAYS the denominator of your percent)

Second:

You multiply 10 and 91 which gives you 910

Third:

910

___

100

You put the fractions like this and cross out the two zeros to get this:

91

__

10

Lastly you divide 91 and 10 which gives you 9.1 and if you don'y want a decimal then round it to the nearest whole number which gives you 9.

Hope this helps!! =3

What is your fav? Look down

Answers

y = x² - 12x - 8y = x² - 2×6×x + 36 - 44y = ( x - 6 )² - 44 option 4 is right

3 ... ummm i’m not sure like very possibly 3

Find the output y when the input x is -5
y=?

Answers

Answer: y=7

Step-by-step explanation: looking at the graph when x is -5 y= 7

I need help with my homework

Answers

Interesting question


[tex] - 3p - 10 > 14[/tex]
................​

Answers

Answer:

p < -8

Step-by-step explanation:

i hope this helps :)

Please help me asap

Answers

3/4x^2 + 2x - 5 is the correct answer

need help with please

Answers

y=2x
2x=8x-6
2x-8x=-6
-6x=-6
x=1

Answer:

(1,2)

Step-by-step explanation:

So, if y= 2x...

2x= 8x-6

-6x= -6

x= 1

y=2x

y= (2)(1)

y=2

(1,2)

For the graph, what is a reasonable constraint so that the function is at least 600?

Please only submit REAL answers WITH an explanation as to why you chose it!

graph of y equals minus 2 times the square of x plus 40 times x plus 600


A- −10 ≤ x ≤ 30
B- x ≥ 0
C- All real numbers

Please right answers only!

Answers

Answer:

I remember taking this too. So, the correct answer is A! I SWEAR ITS RIGHT!

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Ms. Young acquired a loan of $40,000 at her local bank. The loan has a simple interest rate of 6% per year. What is the amount of interest that Ms. Young will be charged on the loan at the end of 5 years.

Answers

Answer:

12.000

Step-by-step explanation:

40000x6=  240000/100=  2400x5

Solve the following equation for x.

Answers

What’s the equation? It’s not a showing a picture attached.

Answer:

Step-by-step explanation: what’s the equation?

Isaac paid $81 for a new surfboard. The amount paid was 60% of his total savings. How much money did he have in his savings before buying the surfboard?

Answers

Answer:

$135

Step-by-step explanation:

Given data

Amount paid for new surfboard= $81

Percentage of the savings paid= 60%

Let the amount of the savings be x

Hence

60% of x= 81

60/100*x= 81

0.6x=81

x= 81/0.6

x=$135

Hence his savings was $135

4 + 2x 2 + 3y + 7 – x 2 + 2y simplify

Answers

Answer:

[tex]x^{2}[/tex] + [tex]5y[/tex] + [tex]11[/tex]

Step-by-step explanation:

If you roll two dice, what is the probability of landing on the numbers 3 and 6?

Answers

1/6 chance to get a 3
1/6 chance to get a 6
1/6 * 1/6 = 1/36
1/36 chance to get a 3 and a 6

Answer:

2/36 or 1/18

Step-by-step explanation:

rolling two dice produces 36 outcomes

rolling a 3 and a 6 is one outcome

rolling a 6 and a 3 is a second outcome

If (5^n)^3 = 5^12 then n= ?
6

Answers

Answer: n=4

Step-by-step explanation:

Uh I did some trial and error and it came up with the right answer

Each of the figures are similar. Find the missing length.

Answers

Answer:

7

Step-by-step explanation: the rule is to divide by  in this case. 21 / 3 is 7

Answer:

? = 7 m

Step-by-step explanation:

6/18 = ?/21

18? = 126

? = 7

Find the Greatest Common Factor of 25c2 and 10w2

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{25c^2: 1,5,25,c,\& \ c}[/tex]

[tex]\mathsf{10w^2: 1,2,5,10,w,\& \ w}[/tex]

[tex]\large\textsf{GCF: \underline{5} because that is the HIGHEST factor both numbers share}\\\large\textsf{together}[/tex]

[tex]\boxed{\boxed{\large\textsf{Answer: the \bf GCF (\underline{G}reatest \underline{C}ommon \underline{F}actor) is \huge 5}}}\huge\checkmark[/tex]

[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

On monday , 60% of tue costomers who boight gas at a gas station made additional pirchases there were 25 costomers who bought gas .How many of these costomers made additional purchaces

Answers

Answer:

15 customers

Step-by-step explanation:

Given data

Total Number of customers= 25

60% of 25 customers made an additional purchase

Hence the number of customers that made additional purchase is

=60/100*25

=0.6*25

=15customer

Hence 15 customers made additional purchase

Petra is making donuts by stamping circles in dough using a pastry stamp with a diameter of 3 inches. For the donut hole, she stamps out a circle using a pastry stamp that has a diameter of 1 inch.

How many square inches of dough are left to make the donut after the hole has been removed?

Answers

Answer:

2 inches would be left

Step-by-step explanation:

if it costs 21.6$ for 12 brownies, how much would it cost for 1

Answers

21.6 divided by 12= $1.80

Answer:

1.8$

Step-by-step explanation:

simply just say 21.6 divided by 12 (number of brownies) which equals to 1.8

so therefore the answer is 1.8$ for 1 brownie

Find the mean of the following numbers:

32, 45, 33, 32, 43, 36, 38, 41, 39, 30, 44

Answers

Answer:

Step-by-step explanation:

Mean: 41+39+48+52+41+48+36+41+37+35/10

=41.8

Mode:41

Median:41

30, 32, 32, 33, 36, 38, 39, 41, 43, 44, 45 added together = 413
Divide by 11 (the number of items in the set)
Mean = 37.54545454
I don’t know how many decimal places they want you rounding to.

The ships kitchen stocks 1 3/5 quarts of ice cream for every 1/4 cake. There are 10 cakes in the kitchen. How many quarts of ice cream are there?

Answers

Answer:

it should be 11.85 if it's not I do not know what is the answer to it

Answer:

actually the answer is 64

Step-by-step explanation:

IDENTIFICA EL VOLUMEN DE CADA UNA DE LAS SIGUIENTES FIGURAS

Answers

Answer:

Não falo espanhoooooooooooooooool

The perimeter of a rectangle is 16x – 6. If the length is
5x + 2, what is the width?

Answers

Answer:

3x + 1

Step-by-step explanation:

5x + 2 × 2 = 10x + 4

do this take 16x - 6

you get 6x + 2

then divide by 2 to get the answer 3x+1

Answer:

w = 3x - 5

Step-by-step explanation:

Perimeter of a rectangle formula:

P = 2(l + w)

16x - 6 = 2(5x + 2 + w)

16x - 6 = 10x + 4 + 2w

2w = 16x - 6 - 10x - 4

2w = 6x - 10

w = 3x - 5

A school ordered a trapezoidal activity table as shown in the figure. Find the area of the table. SHOW ALL
WORK!!!
60 mm
14 in
SOT

Answers

Answer:

A=630 in^2

Step-by-step explanation:

Triangles: there are two equal triangles so we can treat them as one rectangle

A = 15 * 14 = 210

Rectangle:

A=30 * 14 = 420

A_total = 210 + 420 = 630 in^2

Shirts are on sale for 30% off. The original price of one shirt is $15. What is the total cost, in dollars, of 2 of these shirts at the sale price, including a 7% sales tax?

Answers

Answer:

I pretty sure the answer is $22.47

Step-by-step explanation:

15+15=30-30%=21+7%=22.47

Answer:

Hi ! The answer to your question would be $23.54

Step-by-step explanation:

30% off of $15 would bring you to $10.50, if you add $10.50 twice u would get $21. The 7% sales tax would be $2.54, adding that to $21 you get $23.54

Can someone please help me with this math problem please:):)

Answers

Answer:

4800cm²

Step-by-step explanation:

20x30x8=4800

4,800 cm just multiply each side and that’s ur answer

A teacher buys a ruler for $2.25 and a sketchbook for $10.25 for each student in their classroom. The teacher spenes a total of 5525.0D for all of the
rulers and sketchbooks

Answers

what’s your question ?

what is the range of it​

Answers

Answer:

6

Step-by-step explanation:

Can I please have brainliest :)

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