Help i dont know what to do

C

Step-by-step explanation:

I think its C

X + Y = Z

and Y can't be negative so I think its C

is there answer choices?

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!