Question

2 Subtract 2xy-4x²y2 from 5x²y2​

Answer 1

5x²y²-(2xy-4x²y²)

=5x²y²-2xy+4x²y²

=9x²y²-2xy

Answer 2

$5 {x}^{2} {y}^{2} - (2xy - 4 {x}^{2} {y}^{2} ) \\ \\ = > 5 {x}^{2} {y}^{2} - 2xy + 4 {x}^{2} {y}^{2} \\ \\ = > 9 {x}^{2} {y}^{2} - 2xy$