Question

Q6.Find the values of a and b so that the polynomial 4 +a3
-72+8x +b is exactly divisible by

(x+2) as well

as (x+3).​

Answer 1

Step-by-step explanation:

If it is divisible by (x+2) and. (x+3)

that means x=-2;x=-3 ,is zero of polynomial.

now putting x=-2

4+a3-72+8(-2)+b

=4+3a-72-16+b=3a+b=82 ------1st eq.

again putting x=-3

4+3a-72+8(-3)+b

=4+3a-72-24+b

=3a+b=92. -----------2nd eq

now do the further calculation...