if a,b,c are in ap show that a^3+b^3+6abc=8b^3
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a+c=2b
in cubing both sides of eq
a^3+b^3+3ac(a+c)=8b^3
a^3+b^3+6abc=8b^3. a+c=2b
in cubing both sides of eq
a^3+b^3+3ac(a+c)=8b^3
a^3+b^3+6abc=8b^3. a+c=2b
07swatiii:
tnx
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