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

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

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Answer 1 · 2016-09-18T08:13:28

$+ 9$ $+9$

Explanation:

Start with the innermost bracket.

$- [3 - 3 {(- 4 + 2)}^{2}]$ $-[ 3- 3color(red)(( - 4+ 2))^{2] ]$
$\times \times \times \times \times \times \times \times \times x (- 4 + 2 = - 2)$ $color(white)(xxxxxxxxxxxxxxxxxxx)(-4+2=-2)$
= $- [3 - 3 \times {(- 2)}^{2}] \leftarrow$ $-[ 3- 3xxcolor(red)(( - 2)^2)]" "larr$ power before multiply
$\times \times \times \times \times \times \times \times \times x {(- 2)}^{2} = 4)$ $color(white)(xxxxxxxxxxxxxxxxxxx)(-2)^2=4)$
= $- [3 - 3 \times 4]$ $-[ 3color(red)(-3xx4)]$
$\times \times \times \times \times \times \times \times \times x (- 3 \times 4 = - 12)$ $color(white)(xxxxxxxxxxxxxxxxxxx)(-3xx4=-12)$
= $- [3 - 12]$ $-[color(red)(3-12)]$
$\times \times \times \times \times \times \times \times \times x (3 - 12 = - 9)$ $color(white)(xxxxxxxxxxxxxxxxxxx)(3-12 =-9)$
= $- [- 9]$ $color(red)(-[-9])$

= $+ 9$ $+9$

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

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