Answer :
Answer:
option B:
7x⁵ - x³ - x² + 4x
Step-by-step explanation:
given expression is:
3x⁴ + 2x³ - 5x² + 4x² + 6x - 2x - 3x⁴ + 7x⁵ - 3x³
= 3x⁴ + 2x³ - x² + 4x - 3x⁴ + 7x⁵ - 3x³
combining the like terms:
= 7x⁵ + 3x⁴ - 3x⁴ + 2x³ - 3x³ - x² + 4x
= 7x⁵ - x³ - x² + 4x