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(8/15)^3 - (1/3)^3 - (1/5)^3=x/75 solve …

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(8/15)^3 - (1/3)^3 - (1/5)^3=x/75 solve equation to find value of x

Posted by Sarvesh Aware 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Adeel Khan 7 years, 10 months ago

here a=8/15, b=-1/3, c=-1/5, since here (a+b+c)=0, then a³+b³+c³=3abc, therefore (8/15)³+(-1/3)³+(-1/5)³=x/75, 3 × 8/15 ×1/3 × 1/5 =x/75, 8/75 =x/75, therefore x=8

4Thank You

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