Hey there :)
( 2x⁷ + 4x⁴ - 2x + 3 ) - ( 4x⁴ - 2x³ + 3 )
Distribute the " - " sign inside the brackets
2x⁷ + 4x⁴ - 2x + 3 - 4x⁴ - ( - 2x³ ) - 3
Combine like terms
2x⁷ + 4x⁴ - 4x⁴ + 2x³ - 2x
2x⁷ + 2x³ - 2x
Your answer will be [tex]\boxed { Option \ D }[/tex]