P(x) is a polynomial function. If P(x^2) = (a-b+2)x^3 - 2x^2 + (2a+b+7)x - 20 , what is P(a+b) ?
2 Answers
Jun 20, 2016
Explanation:
If
The proposition is not feasible once defined
Jun 20, 2016
Explanation:
Since
So we require
Adding these two equations together, we get:
P(x^2) = -2x^2-20
So:
P(x) = -2x-20
Hence:
P(a+b)
= P((-3)+(-1))
= P(-4)
= -2(-4)-20
= 8-20
= -12