Question

How to explain that $$-3^2 = -9$$

Answer 1

as written it is not an equal statement
3^2i=-9 but I don't think you meant that

Answer 2

uh oh here we go...

Answer 3

any one with a brain could figure that out....hows it feel... :/

Answer 4

\[-(3)^2=-(3\times3)\]

Answer 5

that is a true statement unkle but not the same equation.

Answer 6

huh?

Answer 7

but that might just be what skull was looking for

Answer 8

what is \(12-3^2\)?

Answer 9

I mean
What you wrote is correct, but unless a mistake was make in the OP, his equation is not a true statement