Solution:
(4x^2 - 2x) - (-5x^2 - 8x)
= 4x^2 - 2x + 5x^2 + 8x.
= 4x^2 + 5x^2 - 2x + 8x.
= 9x^2 + 6x.
= 3x(3x + 2).
Answer: 3x(3x + 2)
(4x^2 - 2x) - (-5x^2 - 8x)
= 4x^2 - 2x + 5x^2 + 8x.
= 4x^2 + 5x^2 - 2x + 8x.
= 9x^2 + 6x.
= 3x(3x + 2).
Answer: 3x(3x + 2)