Question

if the remainder on division of x^3+2x^2+kx+3 by (x-3) is 21 find the quotation and the value of k​

Answer 1

Step-by-step explanation:

1. If x-3 is divisor then p(3) is the remainder.
2. p(3)=(3)^3+2(3)^2+k(3)+3
3. Remainder is 21
4. 21=48+3k
5. 21-48= 3k
6. -27=3k
7. -9=k