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LenaWriter [7]
3 years ago
10

I'm having trouble solving this, if anyone could help I'd be most appreciated.

Mathematics
1 answer:
STALIN [3.7K]3 years ago
5 0
You can check that
f(1)=0
f(-3)=0
f(-5)=0

thus:
x^3+7x^2+7x-15=\boxed{(x-1)(x+3)(x+5)}

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