If a^2(b+c), b^2(c+a), c^2(a+b) are in A.P., show that either a,b,c are in A.P. or ab+bc+ca=0.
Asked by shaktidevgun | 19th Dec, 2015, 06:56: PM
Expert Answer:

Answered by Vimala Ramamurthy | 21st Dec, 2015, 08:56: AM
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