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OpenStudy (aimmebgood):
3a^(2) - 21a + 30 factor completely. The answer is 3(a - 2)(a-5) but thats not what I keep getting. how do you get to the answer?
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OpenStudy (anonymous):
\[3 a^2-21 a+30=3\left(a^2-7 a+10\right)=3 (a-5) (a-2) \]
OpenStudy (aimmebgood):
where does the -5 and the -2 come from in the equation?
OpenStudy (anonymous):
quadratic formulas
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