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hello sir

Asked by meherdhingra 19th February 2009, 9:32 AM
Answered by Expert
Answer:

a2 - b 2 = (a+b) (a-b) = (4) (  5 -  5 / 2 ) = 4 5 - 2  10

Answered by Expert 19th February 2009, 8:03 PM
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