Question

7) If x² - 1 is a factor of px3 + 4x²5x + q find the value of p and q.

Answer 1

Step-by-step explanation:

x = 1

px^3 + (4x^2)5x + q

p + 20 + q = 0 (1. x^2 -1 a factor of the polynomial

2. if x = 1 then remainder = 0)

p+q = -20

possible values for p and q can be -10,-10 or -15,-5