Question

How do you simplify `(-3)^3 - (-4)^2 - (-12 + 7)`?

Answer 1

`-38`

Explanation:

The first step is to evaluate the Parenthesis. That is calculate the parts in brackets.

`(color(red)(-3))^3=(color(red)(-3)xxcolor(red)(-3)xxcolor(red)(-3))=color(red)(-27)`

`(color(blue)(-4))^2=(color(blue)(-4)xxcolor(blue)(-4))=color(blue)(16)`

`(color(magenta)(-12+7))=color(magenta)(-5)`

Now place these values into the expression and evaluate from left to right.

`rArrcolor(red)(-27)-color(blue)(16)-(color(magenta)(-5))`

`=-27-16+5=-43+5=-38`