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
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
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