Answers

2014-07-05T18:54:06+08:00
Do you mean the product of the sum and difference of two terms? If yes, then:

(a+b)(a-b) = a² - b²

Examples:

(4x + 2)(2x - 1) = 2(2x + 1)(2x - 1) = 2(4x² - 1) = 8x² - 2
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