1.

If a, b, c are in A.P., prove that: (i) (a−c)2=4(a−b)(b−c) (ii) a2+c2+4ac=2(ab+bc+ca) (iii) a3+c3+6abc=8b3

Answer»

If a, b, c are in A.P., prove that:
(i) (ac)2=4(ab)(bc)
(ii) a2+c2+4ac=2(ab+bc+ca)
(iii) a3+c3+6abc=8b3



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