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2014-07-19T14:32:55-03:00
-2x²+32=0
+2x²-32=0
x²=32/2
x²=16
x=+/- raiz de 16
x= +/- 4
2 4 2
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2014-07-19T15:16:31-03:00
Pela formula

-2x²+32=0

2x²-32=0

a=2
b=0
c=-32
Δ=b²-4ac
Δ=0-4(2)(-32)
Δ=256
√Δ=16

x'= \frac{0+16}{4} =4

x"= \frac{0-16}{4} =-4

S={-4,4}


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