A) G. P.
B) A. P.
C) H. P.
D) None of these
Correct Answer: A
Solution :
On expanding, \[-a(b-c)+2b(b-c)+(a-b)(b-2c)=0\] Þ \[-ab+ac+2{{b}^{2}}-2bc+ab-2ac-{{b}^{2}}+2bc=0\] Þ \[{{b}^{2}}-ac=0\] Þ \[{{b}^{2}}=ac\].You need to login to perform this action.
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