Question

Solve the equation. If necessary, round your answer to the nearest tenth.

x2 = 256

A.
128

B.
16

C.
16, –16

D.
128, –128

Answer 1

16, -16

Explanation:

x^2 = 256

x =
`√(256)`

x =
`√(4 * 64)`

x =
`√(4)` *
`√(64)`

x = 2 * 8

x = 16

Hopes this helps >.<

Answer 2

there was to solutions
x=16
x=-16