Question

-5(x-3y)^2+7(3y-x) factor ?

Answer 1

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$- 5 {(x - 3y)}^{2} + 7(3y - x)$

$- 5( {x}^{2} + 9 {y}^{2} - 6xy) + 21y - 7x$

$- 5 {x}^{2} - 45 {y}^{2} + 30xy + 21y - 7x$

Answer 2

Step-by-step explanation:

$- 5 {(x - 3y)}^{2} + 7(3y - x) \\ \\ -5( {x}^{2} - 6xy + 9 {y}^{2} ) + 21y - 7x \\ \\ - 5 {x}^{2} + 30xy - 45 {y}^{2} + 21y - 7x$