Factoring (Difference of Squares) a2 b2 = (a + b)(a b) – – Examples: x2 49 = x2 72 = (x + 7)(x 7) – – – 4 n2 = 22 n2 = (2 n) (2 + n) – – – 9x2 25y2 = (3x)2 (5y)2 – – = (3x + 5y)(3x 5y) –
Factoring (Difference of Squares) a2 – b2 = (a + b)(a – b) Examples: x2 – 49 = x2 – 72 = (x + 7)(x – 7) 4 – n2 = 22 – n2 = (2 – n) (2 + n) 9x2 – 25y2 = (3x)2 – (5y)2 = (3x + 5y)(3x – 5y)
alg-2-vocab-cards-2016.docx