Question

if (x-2) is a factor of x3-2x2-px-2 find the value of p hence factorise the expression completely​

Answer 1

Answer:

So, p(x) = x³-2x²-px-2

If x-2 is a factor then p(2) = 0

Then, p(2) = 2³-2×2²-2p-2=0

= 8-8-2p-2=0

-2p=2

Ans. p=-1