Question

Check whether the polynomial (x2 – 4x – 12) is exactly divisible by (x + 2) or not.

Answer 1

Answer:

Yes. x^2 - 4x - 12 is exactly divisible by (x+2). So we need to prove that (x+2) is a factor of x^2 - 4x - 12.

Step-by-step explanation:

x^2 - 4x - 12

= x^2 +2x - 6x - 12

= x (x+2) -6 (x+2)

= (x+2) (x-6)