Question

The sum of the remainder obtained when (x^3+(k+8)x+k) is divided by (x-2) or when it is divided by (x+1) is zero. Find the value of k

Answer 1

Here we get remainder zero when 4x3 - 3x2-ax+4 is divided by x-1

Therefore put x-1= 0 

⇒ x = 1

By Putting the value of 'x' in the polynominal , we get

⇒

⇒4-3-a+4=0

⇒a=5