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. 6.3 MULTIPLICATION OF BINOMIALS; SPECIAL BINOMIAL PRODUCTS Properties: 1. Perfect Square Trinomial: Note: Example 1. 2. Difference of Square: 3. FOIL: Multiply the following: 1. (x + 7 )(x + 2) = 2. (2 y 3. 3 1 x − x + = 4 2 4. ( y − 1)( y − 4)( y + 3) = 5. (3x + y )2 = 3 )( ) + 4 3y 2 − 5 = 1 . 2 6. 1 2y − = 2 7. (3x − 2)2 − (x − 1)2 = 8. (2 x + 5)(2 x − 5) = 9. 1 1 3 y + 3 y − = 3 3 Example 2. Find the area of 4x − 3 4x + 3 2