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OpenStudy (anonymous):
a^2 - 11a + 30 = 0
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OpenStudy (katrinakaif):
a^2-11a +30 = 0 (a^2 -6a) (-5a + 30) a(a-6) -5(a-6) (a-5) (a-6)
OpenStudy (katrinakaif):
Solve for a a - 5 = 0 a - 6 = 0 a = 5 or 6, check for extraneous solutions
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