How do you factor (by grouping): a-b+a squared-b squared

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Guest Mar 31, 2015

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Best Answer

a - b + a^2 - b^2 = {group the first two terms and the last two terms}

(a - b) + (a^2 - b^2) =

(a - b) + (a - b) (a + b) =

(a - b) (1 + [a + b])

CPhill Mar 31, 2015

CPhill · Answer 1 · 2015-03-31T11:36:13

a - b + a^2 - b^2 = {group the first two terms and the last two terms}

(a - b) + (a^2 - b^2) =

(a - b) + (a - b) (a + b) =

(a - b) (1 + [a + b])