SOLUTION: x2+5x=40-x
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Question 98802
:
x2+5x=40-x
Answer by
malakumar_kos@yahoo.com(315)
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x2+5x=40-x
x^2+5x+x-40 = 0
x^2+6x-40 = 0
x^2+10x-4x-40 = 0
x(x+10)-4(x+10) = 0
(x+10)(x-4) = 0
x+10 = 0 or x = -10
x-4 = 0 or x = 4