Question

If P(x) = 12x3 + 11x2 - 9x + 10 and
Q(x) = 4x2 – 3x + 2, find
P(x) + Q(x)

Answer 1

12x^3+15x^2-12x+12

Explanation:

P(x) = 12x^3 + 11x^2 - 9x + 10

Q(x) = 4x^2 – 3x + 2

P(x) + Q(x) = 12x^3 + 11x^2 - 9x + 10+ 4x^2 – 3x + 2

Combine like terms

=12x^3+11x^2+4x^2-9x-3x+10+2

=12x^3+15x^2-12x+12