Find y3 - 1y3- if y - 1y - 9

The correct option is A 756 ( y 1y )^3=y^3 1y^3 3y+3y ( y 1y )^3+3 ( y 1y #160; )=y^3 1y^3 9^3+3(9)=y^3 1y^3 ⇒ y^3 1y^3=756 ...

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Exponents with like Bases

Find y3 - 1...

Question

Find $y^{3} - \frac{1}{y^{3}}$ , if $y - \frac{1}{y} = 9$

729

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756

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702

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725

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Similar questions

y - \frac{1}{y} = 9

y^{3} - \frac{1}{y^{3}}

(y + \frac{1}{y}) = 12

(y^{3} + \frac{1}{y^{3}})

If $\frac{x}{y} + \frac{y}{x} = - 1$ then find $x^{3} - y^{3}$

[y^{3} - \frac{1}{y^{3}} - 3 (y - \frac{1}{y})] \div (y - \frac{1}{y})

If x+y+z=9 and xy+yz+zx = 23, the value of $(x^{3} + y^{3} + z^{3} - 3 x y z) = ?$

(a) 108

(b) 207

(d) 729

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