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Factoring the Difference of Perfect Squares a2 – b2 is a special product binomial. It can be classified as the "difference of perfect squares" a2 – b2 factors into: (a – b)(a + b) 4x2 - 9 = ( - 3 ) ( 2x + 3 ) Fill in the missing term. x2 - 16 = ( x - 4 ) ( x + ) Fill in the missing term. x2 - 121 = ( x - ) ( x + 11 ) Fill in the missing term. 9x2 - 4 = ( 3x 2 ) ( 3x + 2 ) Fill in the missing sign. x2 - 36 = ( - ) ( x + 6 ) Fill in the missing terms. 9x2 - 25 = ( - ) ( + ) Fill in the missing terms. 16x2 - 81 = ( - ) ( + ) Fill in the missing terms. x2y2 - 100 = ( - ) ( + ) Fill in the missing terms. Factor the expression. 49x2 - 25y2 (7x – 5y)(7x – 5y) (7x – 5)(7x + 5) (7x – 5y)(7x + 5y) can not be factored Factor the expression. x2 + 9y2 (x + 3y)(x – 3y) (x – 3y)(x + 3y) (x – 3y)(x – 3y) can not be factored Factoring the Difference of Perfect Squares a2 – b2 is a special product binomial. It can be classified as the "difference of perfect squares" a2 – b2 factors into: (a – b)(a + b) |