Question

Solve 8= 2x + 4 A. x = -4 ... B. x = -1... C. x = 0 ... D. x = 7

Answer 1

x = −1

Explanation:

Write it in exponential form, 2^3 = 2^x+4

Since base is the same, Set the exponents equal, 3 = x + 4

Move the terms, variable goes to the left side and change the sign -x + 3 = 4

Subtract and calculate, -x = 1

Change the signs on both sides, x = -1

Answer 2

x = 2.

Explanation:

Given : 8= 2x + 4

To find : Solve.

Solution : We have given that

8= 2x + 4.

On subtracting both sides by 4

8 - 4 = 2x

4 = 2x

On dividing by 2 both sides and switching the sides

x = 2.

Therefore, x = 2.