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Dimas [21]
3 years ago
8

How do you factor the expression -y^2 9y - 20?

Mathematics
1 answer:
Dmitry [639]3 years ago
5 0
Undistribute -1
(-1)(y^2-9y+20)
what multiplies to 20 and adds to -9
-5 and -4
(-1)(x-5)(x-4) or
(5-x)(x-4) or
(x-5)(4+x)
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