If x – 1 is a factor of the polynomial p(= x3 + ax2 + 2b and a + b = 4, then
A. a = 5, b = –1
B. a = 9, b = –5
C. a = 7, b = –3
D. a = 3, b = 1
Answer:B
If x – 1 is a factor of the polynomial p(= x3 + ax2 + 2b and a + b = 4, then
A. a = 5, b = –1 B. a = 9, b = –5 C. a = 7, b = –3 D. a = 3, b = 1