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Entrance Quiz 1. (x + 8)(x + 9) 2. 4. (3x + 5)(3x – 5) 5. (t – 3)² 3. (5x + 4)(3x – 2) (4a + 2)² 6. (3b – 2)(2b – 3)  IWBAT factor trinomials into binomials using reverse FOIL   Definition: An equation in which one or more of the terms is squared but raised to no higher power. Standard Form: ax2 + bx + c  Where a, b, and c are numbers and x is the variable  Simplify using FOIL or Box ( x  2)( x  3) ( x  4)( x  5) # term is ________ x term is ________________________  Simplify using FOIL or Box ( x  3)( x  7) ( x  3)( x  7) # term is _________ x term is ________________________  By the end of today you will be able to do this: x  2x  8 ( x  4)( x  2) 2 1.) Write the parentheses and x’s 2.) Choose your signs 3.) List the factors of the last number 4.) Give them signs and combine  (x )( x )  (x + )(x + )  16: 1, 16; 2, 8; 4, 4  (x + 2) (x + 8) 1.) Write the parentheses and x’s 2.) Choose your signs 3.) List the factors of the last number 4.) Give them signs and combine  (x )( x  (x + )(x -   ) ) 24: 1, 24; 2, 12; 3, 8; 4, 6 (x + 8) (x – 3) 1.) Write the parentheses and x’s 2.) Choose your signs 3.) List the factors of the last number 4.) Give them signs and combine  (x )( x )  (x + )(x - )   30: 1, 30; 2, 15; 3, 10; 5, 6 (x - 6) (x + 5) 1.) Write the parentheses and x’s 2.) Choose your signs 3.) List the factors of the last number 4.) Give them signs and combine  (x )( x  (x -  16: 1, 16; 2, 8; 4, 4  (x – 4) (x – 4) )(x - ) ) 1.) Write the parentheses and x’s 2.) Determine the square root of the constant 3.) Write the factors  (x  25 = ±5 )( x (x + 5) (x – 5) )