Please help

Asked by Rahulsinha1993 | 30th Nov, 2009, 10:50: AM

Expert Answer:

 If a,b,c are in AP  then 2b =a+c 

Consider the RHS of (a-c)2=4(b-c)2

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

Answered by  | 30th Nov, 2009, 11:49: AM

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