Question

Subtract-2x⁴-8x²+6x-4 from 5x⁴-4x³-2x+3​

Answer 1

$= 5x⁴-4x³-2x+3 - (-2x⁴-8x²+6x-4 )$

$= 5x⁴-4x³-2x+3 + 2 {x}^{4} + 8 {x}^{2} - 6x + 4$

$= 5 {x}^{4} + 2 {x}^{4} - 4 {x}^{3} + 8 {x}^{2} - 6x + 3 + 4$

$= 7 {x}^{4} - 4 {x}^{3} + 8 {x}^{2} - 6x + 7$