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Let’s f.o.i.l .!. O is for outer. F is for first. I is for inner. L is for last. 1. (5x – 7)(3x + 2). 5X · 3X = 15X². MULTIPLY THE FIRST TERM IN EACH PARENTHESIS. O. 5X · 2 = 10X. MULTIPLY THE OUTER TERM IN EACH PARENTHESIS. F. I. MULTIPLY THE INNER TERM IN EACH PARENTHESIS.
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Let’s f.o.i.l.! Ois for outer Fis for first I is for inner L is for last
1. (5x – 7)(3x + 2) 5X · 3X = 15X² MULTIPLY THE FIRST TERM IN EACH PARENTHESIS O 5X · 2 = 10X MULTIPLY THE OUTER TERM IN EACH PARENTHESIS F I MULTIPLY THE INNER TERM IN EACH PARENTHESIS -7 · 3X = -21X L MULTIPLY THE LAST TERM IN EACH PARENTHESIS -7 · 2 = -14