MATH SOLVE

3 months ago

Q:
# I need help!In parallelogram ABCD , AE=x^2−8 and CE=2x .What is AC ?

Accepted Solution

A:

The correct answer is 16

because

x^2 - 8 = 2x

x^2 - 2x - 8 = 0

(x + 2)(x - 4) = 0

x = - 2 or x = 4

(4)^2 - 8 = 16 - 8 = 8

2(8) = 16

because

x^2 - 8 = 2x

x^2 - 2x - 8 = 0

(x + 2)(x - 4) = 0

x = - 2 or x = 4

(4)^2 - 8 = 16 - 8 = 8

2(8) = 16