Question

Solve for x.

2x2=128



−6 and 6
​ −8 ​ and 8
​ −32 ​ and 32
​ −64 ​ and 64

Answer 1

Explanation:

Answer 2

x = - 8, x = 8

Explanation:

Given

2x² = 128 ( divide both sides by 2 )

x² = 64 ( take the square root of both sides )

x = ±
`√(64)` = ± 8

That is x = - 8, x = 8