Question

If x-3 divides x2 - px +12, then the value of p is
(1) 7
(2) 6
(3) 17
(4) 14​

Answer 1

Answer:

The answer is (1) 7

Step-by-step explanation:

p(x) = x^2- px + 12

x-3=0

x = 3

3^2 - p(3) + 12 =0

9 - 3p + 12 = 0

21 -3p =0

3p = 21

p = 21÷3

p = 7