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dinainjune
 4 years ago
if x + 1/x = 5
how about
x^3 + 1/ x^3 ?
dinainjune
 4 years ago
if x + 1/x = 5 how about x^3 + 1/ x^3 ?

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dinainjune
 4 years ago
Best ResponseYou've already chosen the best response.0the question is this \[x^{3} + 1/ x^{3}\]

him1618
 4 years ago
Best ResponseYou've already chosen the best response.1(x + 1/x )^3 = 125 = x^3 + 1/x^3+ 3x + 3/x 125 = x^3 + 1/x^3 + 3(x+1/x) 125 = x^3 + 1/x^3 +15 hence x^3 + 1/x^3 = 110
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