If x = 1, what is the value of the following expression?

HELP ME PLSSS! Please help me...

Answer:

Expression

An algebraic expression is a combination of variables, numbers, arithmetic operations, powers, roots, and more. Within algebra, there are many forms of expressions that may have specific names, such as polynomials. Below are a few examples of algebraic expressions:

x + 7

x2 + 3x + 4

Evaluating expressions

Expressions can be part of equations, or they can also be evaluated for a given value. This means to substitute the given value into the expression then perform the operations in the expression.

Examples

1. Evaluate the following expression given that x = 5

(2x + 7) × x

(2(5) + 7) × 5 = (17) × 5 = 85

Another way that this problem could have been posed is using the following notation:

[(2x + 7) × x] | x = 5

The vertical bar means to evaluate the expression given what comes after the bar.

2. (2x2 + 7x) | x = 5

2(5)2 + 7(5) = 50 + 35 = 85

From the above examples we can see that:

(2x + 7) × x = 2x2 + 7x

They are equivalent expressions.

Equivalent expressions

Equivalent expressions are expressions in which for some given variable (or variables), such as x, the values of the expressions are equal.

2x + 2 = 2(x + 1)

For any value of x, the expressions above have the same value; they are just in different forms. We can test this by plugging a few values in for x.

If x = 1: 2(1) + 2 = 2(1 + 1)

4 = 4

If x = -5: 2(-5) + 2 = 2(-5 + 1)

-8 = -8

We can do this for many more numbers, but the result will be the same.

Writing expressions in different but equivalent forms can be helpful in certain mathematical contexts, including solving equations in algebra. Having a factored, equivalent form of an expression is one commonly used method for solving algebraic equations involving variables raised to a power.

Example

Solve 2x + 2 = (x + 1)(x + 7)

Expand the right side of the equation, then group the like terms:

2x + 2 = x2 + 8x + 7

x2 + 6x + 5 = 0

Factor the left side of the equation to find an equivalent expression:

x2 + 6x + 5 = (x + 1)(x + 5) = 0

Now that the equation is factored, we can solve for x by dividing each term and setting the remainding term equal to 0. Note that we must do this for each term or we would lose one of the solutions to the problem.

x + 1 = 0

x = -1

and

x + 5 = 0

x = -5

Therefore, the solutions to the above equation are x = -1 and x = -5

Answer:

18 is the answer ...

Step-by-step explanation:

8-2+12

5kg of compost cost £7.50. Find the cost of 3kg of compost

Lisa has a garden with the dimensions of 10x5ft. She can plant an eggplant every 1.5 foot. How many eggplants can she grow to stick them up her a$hole?

HELP PLEASEEEE

Tammy has a rectangular rug with an area of 21 square feet. The rug is 4 feet longer than it is wide. Which equation can be used to determine the length and the width of the rug?

A.
21 = 4w^2

B.
21 = w^2 + 4w

C.
21 = w^2 – 4w

D.
21 = w^2 + 4

Someone help my sister out, cause I’m not helping her I’m to lazy. Lolz.

A fair-sided coin is tossed 18 times.

Which of the experimental outcomes is most consistent with theoretical outcomes?

A. 4 heads and 14 tails
B. 6 heads and 12 tails
C. 9 heads and 9 tails
D. 10 heads and 8 tails

Steve puts an 18-foot ladder against his house. The ladder reaches a height of 15 feet on the house. How far is the bottom of the ladder from the base of the house? Leave the answer as a simplified square root.

A student was estimating 9% of 38. Would 4 be a
reasonable answer?

Here is a funny thing
Someone does math with out using a calculator

WITCHCRAFT

need help with my math homework
Write the equation of the line that goes through the point (6, O) and has a slope of -1/2​

In VWX, ZW XV, XV = 13 and VW = 8. Find the length of WX. .​

6²•8² = [?]
Enter the value ​

A group of 4 friends bought movie tickets. Each person also bought a large popcorn for $7.50. If they spent a total of $72, how much was each movie ticket (t)?

please please help me it's due today! (slopes) (brainliest)

Which side lengths form a right triangle?

y-intercept of y=-1.33x+72.6

What is the solution?
2
WHATS THE ANSWER!!! hurry

How do you dilate a shape by 3 and 5?

Can you please help me on this??

1. A cab company charges its customers a flat rate of
$10 plus $0.75 per mile. Find a rule for the linear
function that describes the cab company's basic fees.

Which value of k makes the equation k2=10k2=10 true?20
20
12
8
5

Directions: Solve for X. Round to the nearest tenth. . 12 54​

A company is going to make a water tank in the shape of a cylinder. As shown below, the tank will have a height of 2ft and a radius of 5ft. The tank will be made from metal (including its top and bottom). Suppose the total cost of the metal will be 8572.20. How much will the metal cost per square foot? Use 3.14 for pi, and do not round your answer.

Please give an understandable step-by-step explanation. Thank you !!

x - 2 = Y
Y = -2/3x + 3

Find the value of X.
X= 30
X= 32
X= 25
X=27

Question 7: Timani bought a video game console and some games for $350. The video game
console cost $200. Each game cost $25. Using Linear Equation y = mx + b, explain each letter represent what value.

y=350, m=200, b=25, x is the # of games he purchased.
y=350, m=25, b=250, x is the # of games he purchased.
y=200, m=350, b=25, x is the # of games he purchased.
y=200, m=25, b=200, x is the # of games he purchased.

Find the geometric mean of each pair of numbers 12 and 50

pls help with question 25 50 points brainslest if right

what is the length of AB

what is 5/4 divided by 10 pls be right if u were right ill give u brainliest!!!!!!!!!!!!!!

How many meters are the clouds above the ground? Round your answer to the nearest tenth.