Question

Factorise 2x³ - 3x²-17x+30​

Answer 1

ANSWER

    2x3−3x2−17x+30

=2x3+2x2−12x−5x2−5x+30

=2x(x2+x−6)−5(x2+x−6)

=(x2+x−6)(2x−5)

=(x2+3x−2x−6)(2x−5)

=[x(x+3)−2(x+3)](2x−5)

=(x+3)(x−2)(2x−5)