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2(-3)^2+5(-3^2-(-5))

why do i get -2?

 Dec 16, 2015
 #1
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THIS IS HOW YOU GET -2

 

Simplify the following:
2×(-3)^2+5 (-(-5)-3^2)

3^2 = 9:
2×(-3)^2+5 (-(-5)-9)

-(-5)  =  5:
2×(-3)^2+5 (5-9)

(-3)^2 = 9:
2×9+5 (5-9)

-9+5 = -4:
2×9+5×-4

2×9  =  18:
18+5 (-4)

5 (-4)  =  -20:
18+-20

18-20  =  -(20-18):
-(20-18)

| 1 | 10
| 2 | 0
- | 1 | 8
| 0 | 2:
Answer: | -2
 

 Dec 16, 2015

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