Question

What is `-[ 3- 3( - 4+ 2)^{2] ]`?

Answer 1

`+9`

Explanation:

Start with the innermost bracket.

`-[ 3- 3color(red)(( - 4+ 2))^{2] ]`
`color(white)(xxxxxxxxxxxxxxxxxxx)(-4+2=-2)`
=`-[ 3- 3xxcolor(red)(( - 2)^2)]" "larr` power before multiply
`color(white)(xxxxxxxxxxxxxxxxxxx)(-2)^2=4)`
=`-[ 3color(red)(-3xx4)]`
`color(white)(xxxxxxxxxxxxxxxxxxx)(-3xx4=-12)`
=`-[color(red)(3-12)]`
`color(white)(xxxxxxxxxxxxxxxxxxx)(3-12 =-9)`
=`color(red)(-[-9])`

=`+9`