Question

2x^3-5x^2-9x+18 by x^2-x


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Answer 1

Answer:

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1: -9x-18

Group 2: 2x3+5x2

Pull out from each group separately :

Group 1: (x+2) • (-9)

Group 2: (2x+5) • (x2)

Answer 2

Answer:

p(x)=2x3+5x2−9x−18, find the value of p(−1)

p(−1) implies that the x be replaced by −1

p(−1)=2(−1)3+5(−1)2−9(−1)−18

=−2−5+9−18=9−25=−16