Let's simplify step-by-step.
−x^3 + 5x + 7x^2 + 8x^3 − ( −x^3 + x )
Distribute the Negative Sign:
= −x^3 + 5x + 7x^2 + 8x^3 + −1 ( −x^3 + x )
= −x^3 + 5x + 7x^2 + 8x^3 + −1 ( −x^3 ) + −1x
= −x^3 + 5x + 7x^2 + 8x^3 + x^3 + −x
Combine Like Terms:
= −x^3 + 5x + 7x^2 + 8x^3 + x^3 + −x
= ( −x^3 + 8x^3 + x^3 ) + ( 7x^2 ) + ( 5x + −x )
= 8x^3 + 7x^2 + 4x
Answer:
= 8x^3 + 7x^2 + 4x