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Mathematics
5 June, 07:44
Complete the sqaure - 32=2 (x^2+10x)
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Phoebe Bryan
5 June, 07:47
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-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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