Expand (a+5)(a+7)
Follow Math Help Forum on Facebook and Google+
Use foil
Last edited by 11rdc11; Sep 9th 2008 at 02:17 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
View Tag Cloud