y= x²-2x - 8 – InterviewSolution

1.	y= x²-2x - 8
Answer» X=4 X=4 X²-4x+2x-8 => x(x-4)+2(x-4) => x=-2 or 4 Y=x2-(4-2)x-8 = X2-4x+2x-8 = X(x-4)+2(x-4) =(X+2)(x-4)Ignore (x+2) Then x=4

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