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posted by kasey on Sunday, August 28, 2011 at 5:50pm.
I do not understand multioplying binomials + factoring (x+9) (x-9) can you show and explain the steps
+9 * -9 = -81 x * -9 = -9x x * 9 = 9x x *x = x^2 9x-9x = 0 Answer: x^2 - 81
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