expansions

Asked by vandu207 | 28th May, 2009, 11:31: AM

Expert Answer:

(a/2b + 2b/a)2 - (a/2b - 2b/a)2 - 4=(a/2b + 2b/a+a/2b - 2b/a)(a/2b + 2b/a - a/2b +2b/a)-4

                                                          =(a/b)(4b/a)-4 =-4=0

Answered by  | 30th May, 2009, 02:20: AM

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