urgent please send me the answer
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its explained and fully correct answer so,plz mark as brainliest answer.
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BhaweshSingh1:
plz mark as brainliest plz plz
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By cubing
(x+1/x)3 = x3+1/x3+3*x*1/x(x+1/x)
(7)3 =x3+1/x3+3(7)
49 = x3+1/x3+21
x3+1/x3 =49-21
x3+1/x3=28
(x+1/x)3 = x3+1/x3+3*x*1/x(x+1/x)
(7)3 =x3+1/x3+3(7)
49 = x3+1/x3+21
x3+1/x3 =49-21
x3+1/x3=28
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