If x-1-x - 3 then- x7-1-x7 - -

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Subtraction of Rational Expressions

If x+1/x = 3 ...

Question

If $x + \frac{1}{x} = 3$ then, $x^{7} + \frac{1}{x^{7}} = ?$

840

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Solution

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Similar questions

x + \frac{1}{x} = - 2

x^{7} + \frac{1}{x^{7}}

x = 2

x^{9} + x^{8} + x^{7} + . . . . . . . . . . . . . . + x^{1} + 1

x - \frac{1}{x} = \sqrt{5} x^{7} - \frac{1}{x^{7}} =

{(1 + x)}^{- 3}

| x | < 1

x^{7}

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