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Completely Factor: a 2 - a - 20

Completely Factor: a 2 - a - 20
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4 votes
Completely Factor: a 2 - a - 20

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User Crizzis
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1 Answer

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a^2 - a - 20=\\ a^2-5a+4a-20=\\ a(a-5)+4(a-5)=\\ (a+4)(a-5)
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User Mezzie
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