Question

$2 {x}^{2}y \: - 5x {y}^{2} \: - 4x {y}^{2} \: 7 {x}^{2} y$
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Answer 1

$2 {x}^{2} y - 5x {y}^{2} - 4x {y}^{2} + 7 {x}^{2} y \\ = 9 {x}^{2} y - 9x {y}^{2} \\ = 9xy(x - y)$

Answer 2

Answer:

9xy(x-y)

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