Question

12^2+2 [(13+3)] / 2^2]

-4(3)+5[7-6(-4)^2]

-5(3)+3[9-6(-3)^2]

please show me how to do these

Answer 1

First, there are no equations, just expressions. If you want to simplify them, just work your way out from the inside parens. In the absence of parens, do powers, then mult/div then add/sub

I'll do the first one:

12^2+2 [(13+3)] / 2^2] -- missing "]" or extra "]" inside. I'll assume extra ] inside.

12^2 + 2[16 / 2^2]

12^2 + 2(16/4)

144 + 2*4

144 + 8

152