Answer:
x^2 + 2x - 8
Step-by-step explanation:
h(x) + k(x) = (2x^2 + 5x - 12) + (-x^2 - 3x + 4)
Add Like Terms
(2x^2 + 5x - 12) + (-x^2 - 3x + 4)
2x^2 - x^2 = x^2
(2x^2 + 5x - 12) + (-x^2 - 3x + 4)
5x - 3x = 2x
(2x^2 + 5x - 12) + (-x^2 - 3x + 4)
-12 + 4 = -8
x^2 + 2x - 8
