Question

15(x-y) -20(y-x)^2 factorize​

Answer 1

Step-by-step explanation:

$= 15(x - y) - 20 {(y - x)}^{2} \\ = 15x - 15y - 20( {y}^{2} - 2xy + {x}^{2} ) \\ = 15x - 15y - 20{y}^{2} + 40xy - 20{x}^{2} \\ = - 20 {x}^{2} - 20 {y}^{2} + 15x + 15y + 40xy$

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