Answer:
= (5x³ – 7x² + 3x – 4) + (–8x³ – 2x² – 3x + 7)
= 5x³ – 8x³ – 7x² – 2x² + 3x – 3x – 4 + 7
= –3x³ – 9x² + 3
Explanation:
Change all the signs in the second polynomial and change the operation to addition. Then combine all the like signs/similar terms, then add
