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4 votes
Find the product of (x-4) (x+5)

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2 votes
(x-4)(x+5)
x^2+5x-4x-20 (Step one: FOIL)
x^2+x-20 (Step two: Combine like terms)
User Matt Bodily
by
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4 votes
You have to use the distributive property:
(x*x)+(x*5)+(-4*x)+(-4*5)
x^2+5x-4x-20
x^2+x-20
User Jamie Czuy
by
7.6k points

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