Question
Use the formula to multiply the following : $(x+y)(x-y)$
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Answer
Here, a = x, b = y
(x + y)(x – y) = x² – y²
…. [(a + b)(a – b) = a² – b²]
(x + y)(x – y) = x² – y²
…. [(a + b)(a – b) = a² – b²]
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