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

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

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Answer 1 · 2016-09-18T08:13:28

$+9$

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
$color(white)(xxxxxxxxxxxxxxxxxxx)(-2)^2=4)$
= $-[ 3color(red)(-3xx4)]$
$color(white)(xxxxxxxxxxxxxxxxxxx)(-3xx4=-12)$
= $-[color(red)(3-12)]$
$color(white)(xxxxxxxxxxxxxxxxxxx)(3-12 =-9)$
= $color(red)(-[-9])$

= $+9$

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