Question

-m^2=-81

Answer 1

so whats m^2 =.. ?

Answer 2

do i have to square root to both sides?

Answer 3

first, multiply both sides by -1
\(so, m^2 = 81\)
now you can take square root on both sides :)

Answer 4

ok so does it come out to {9} or {-9,9}

Answer 5

\(m = \pm \sqrt{81} = \pm 9\)
it can take both positive and negative values :)
9, -9

Answer 6

thank you for helping! (:

Answer 7

welcome ^_^