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Difference of two squares a 2 - b 2 = (a + b)(a - b) Sum of two cubes a 3 + b 3 = (a + b)(a 2 – ab + b 2 ) Difference of two cubes a 3 - b 3 = (a - b)(a 2 + ab + b 2 ).
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Difference of two squares a2 - b2 = (a + b)(a - b) Sum of two cubes a3 + b3 = (a + b)(a2 – ab + b2) Difference of two cubes a3 - b3 = (a - b)(a2 + ab + b2)