Question

Given 2x2 = -8, x is

Answer 1

the answer is 2i or -2i

Explanation:

i did it on Edge

Answer 2

The answer is x = 2 or x = -2

Explanation:

2x² = - 8

Send 8 to the left side of the equation

That is

2x² - 8 = 0

Simplify the expression

Divide both terms by 2

That's

2x² /2 - 8 /2 = 0

x² - 4 = 0

Factorize the expression

that's

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

x + 2 = 0 x -2 =0

x = -2 x = 2

Therefore x = 2 or x = -2

Hope this helps you