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Answers by Kristin R.

(x+y)² =(x+y)(x+y)    Then you FOIL (First, outer, inner, last) (x+y)² =(x+y)(x+y) = xx + xy + xy + yy [and when you combine like terms] = x² + 2xy + y² (x+y)3 = (x² + 2xy + y²)(x+y) Then you FOIL (First, outer,...