Question

If (x – 1) is a factor of p(x) = x3 + 2x2 + 5x + k , find the value of k.​

Answer 1

Step-by-step explanation:

p(x) = x3+2×2+5x+k

p(1) = (1)3+2×2+5(1)+k

1 = 1+4+5+k

-k =1+4+5-1

-k = 5+5-1

-k = 10-1

-k = 9

k = -9