Question

Calculate the principal square root of 81.
9
-9
+/-9
6561

Answer 1

I got B

Answer 2

what is 8*8?

Answer 3

64

Answer 4

you want a number times itself that is 91
8*8 is 64, so that is not the answer

Answer 5

*81

Answer 6

and prinicpal root of x is positive root of x

Answer 7

where did u get 8 from?

Answer 8

oh, I saw B and thought it was 8.

if B means -9, it is true -9*-9 is 81
but *principal* square root is *only the positive square root*

Answer 9

so...
A?

Answer 10

yes

Answer 11

thx bro