How do you simplify $2^3 - 4^2-(-3)2 +(-1)^7$ ?

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Answer 1 · 2016-04-14T15:32:59

$-3$

To simplify $2^3-4^2-(-3)2+(-1)^7$

Begin by simplifying the exponents

$2^3 = 8$
$4^2=16$
$(-1)^7=-1$

$8-16-(-3)2+(-1)$

Now simplify the multiplication

$(-3)2 = -6$

$8-16-(-6)+(-1)$

Now simplify the signs

$-(-6) = +6$
$+(-1) = -1$

$8-16+6-1$

Now add and subtract

$8-16=-8$
$+6-1=+5$

$-8+5 = -3$

How do you simplify 2^3 - 4^2-(-3)2 +(-1)^7 2^3 - 4^2-(-3)2 +(-1)^7 ?