Question

a2+b2+c2/(a+b+c)2=a-b+c/a+b+c

Answer 1

To Prove : ( a + b + c ) ( a - b + c ) = a2 + b2 + c2 Proof : a, b, c are in continued proportion. ab = bc = k (let) b = ck a = bk = (ck) k = ck2 L.H.S. ...