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$3\left[a-\frac{1}{a}\right]+\left[a-\frac{1}{a}\right]^3$ = ? |
$a^2-\frac{1}{a^3}$ $a^3-\frac{1}{a^3}$ $a^3+\frac{1}{a^3}$ $a^2-\frac{1}{a^2}$ |
$a^3-\frac{1}{a^3}$ |
$3\left[a-\frac{1}{a}\right]+\left[a-\frac{1}{a}\right]^3$ = 3 (a - \(\frac{1}{a}\)) + a3 - \(\frac{1}{a}\)3 -3 (a - \(\frac{1}{a}\)) = a3 - \(\frac{1}{a}\)3 |
