Question

find x³ minus 5x² + ax-b has (X - 2)and (x+2 ) as factors . find and + b​

Answer 1

Answer:

f(x)=2x

3

−5x

2

+ax+a

f(−2)=2(−2)

3

−5(−2)

2

+a(−2)+a=0

−16−20−2a+a=0

−a−36=0

a=−36