Question

Help me asap

Which equation has both 7 and -7 as possible values of y ?

y³=42

y²=42

y³=49

y²=49

Which equation has both 4 and ? –4 as possible values of y ?

y²=8

y³=12

y²=16

y³=64

Answer 1

You are expected to know (-x)*(-x) = x^2 = (x)*(x) for any value of x.

With this in mind, you expect to be looking for squares in answer to your question. You will find them.

1) y² = 49 . . . . . . . 4th selection
2) y² = 16 . . . . . . . 3rd selection