Question

Find p & q if
( x + 1) and ( x + 2) are the factors of x3+ 3x2 -2px + q

Answer 1

Answer:

(x+1)and(x+2)x3+3x2−3ax+bx=−1putkrneper−1+3+3a+b3a+b=−2....(i)x=−2putkarneper−23+3×−22−3a×−2+b−8+12+6a+b6a+b=−4......(ii)3a+b=−26a+b=−2subtractionkarneper...−3a=0a=0b=−2−3ab=−2−3×0b=−2

hope it helps u...