Answers

2014-05-27T11:09:27+05:30
P(x)=2x^3-3x^2-17x+30
now p(x) is zero at x=2
so
=2x^2(x-2)+x(x-2)-15(x-20)
=2x^3-4x^2+x^2-2x-15x+30
=(x-2)(2x^2+x-15)
=(x-2)(2x^2+6x-5x-15)
=(x-2)(2x(x+3)-5(x+3))
so
(x-2)(x+3)(x-5)
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