add the polynomials
3x^5-2x^3+4x
+ 4x^6-5x^5+4x^3-x^2

Answer: B
4x^{6} - 2x^{5} + 4x^{3} -x^{2} +4x
Step-by-step explanation:
3x⁵ - 2x³ + 4x + 4x⁶ - 5x⁵ + 4x³ - x² =
= 4x⁶ + 3x⁵ - 5x⁵ - 2x³ + 4x³ - x² + 4x
= 4x⁶ - 2x⁵ + 2x³ - x² + 4x