Question

What are all of the solutions to the equation 2y2 = 64?

±32
±√ 2
±4√ 2
±8

Answer 1

y=16

Explanation:

1 Simplify 2y\times 22y×2 to 4y4y.

4y=644y=64

2 Divide both sides by 44.

y=\frac{64}{4}y=

​4

​64

3 Simplify \frac{64}{4}

​4

​64

​​ to 1616.

y=16y=16

Done