Is (X+5)(X+6) = X^2 + 11X + 30?

⚑ Flag

Sure! Use FOIL: First, Outer, Inner and Last... further ill stration:\r\nI will use (a+b)(c+d), and according to their p sition in the parenthesis:\r\nF - First: a*c\r\nO - Outer: a*d\r I - Inner: b*c\r\nL - Last: b*d\r\nIn your example, from O and I yo would get 6X and 5X, respectively, which would add to 11. The 0 would come from L, and x^2 would come from the F.