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in Algebraic Expressions by (31.2k points)
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(1/x + 1/y)(1/x - 1/y) = ?

A. (1/x2 - 1/y2)

B. (1/x2 + 1/y2)

C. (1/x2 + 1/y2 - 1/xy)

D. (1/x2 - 1/y2 + 1/xy)

2 Answers

+1 vote
by (30.8k points)
selected by
 
Best answer

We know that,

From formula, (a + b)(a – b) = a2 – b2

+1 vote
by (123 points)
By,

 (a+b)(a-b)=a²-b²

(1/x+1/y)(1/x-1/y)=1/x² - 1/y²

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