Question

Don't go by my answers pls

Answer 1

19) (
`(-2)/(5)`)^2 =
`(4)/(25)`

20) -
`9^(2)` = -81

21)
`2^(4)` = 16

Explanation:

The only wrong ones are

19) (
`(-2)/(5)`)^2 =
`(4)/(25)`

20) -
`9^(2)` = -81 ... negative is not inside a parenthesis that's why it is still negative

21) you can add another way is
`2^(4)` = 16

Everything else looks good. Great job!