Question

(-y+4)(-y-5)
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Answer 1

Answer:

-4yxy5

=-9y²

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Answer 2

( - y + 4 ) ( - y - 5 )

( - y ) ² - 5 ( - y ) + 4 ( - y ) - 20

y² - 5 ( - y ) + 4 ( - y ) - 20

y² - 5y + 4 ( - y ) - 20

y² + 5y - 4y - 20

y² + y - 20