Expand (a+5)(a+7)
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Use foil
Last edited by 11rdc11; September 9th 2008 at 03:17 AM.
Hello You can use the smile face rule. (a+5)(a+7) (a*a) + (5*7) + (a*7) + (a*5) a^2 + 35 + 7a + 5a a^2 + 12a + 35
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