jordanfuller95 jordanfuller95

15-03-2017
Mathematics

contestada

complete the sqaure -32=2(x^2+10x)

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CaraHyeona17 CaraHyeona17

15-03-2017

-32=2(x^2+10x)
-32=2x^2+20x
-2x^2-20x-32=0
-2(x+2)(x+8)=0

therefore,
x+2=0 or x+8=0
so,...... x= -2 or -8

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