Question

What are the solutions to the equation x² = 256?

Choose all answers that are correct.

A.
128

B.
–128

C.
16

D.
–16

Answer 1

by taking sq rt of both sides, u eliminate the ^2 on the left side...leaving u with : x = sq rt 256...and what does that equal ?

Answer 2

\(x^2 =a \implies x = \pm \sqrt a\)

Answer 3

@hartnn D A

Answer 4

square root of 256 is 16
so
\(\pm 16 \\ +16, -16\)