Question

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Answer 1

1. 1st answer

$\frac{ {x}^{3} }{216} - qy {}^{3}$

$\frac{ {x}^{3} }{216} \times \frac{q {y}^{3} }{1}$

$\frac{ {x}^{3}qy {}^{3} }{216}$

2nd answer

$a {}^{3} + 0.000 =$

$a {}^{3} 0.000$

3rd answer

$a {}^{3} - \frac{1}{a {}^{3} } - 2a + \frac{2}{a}$

$\frac{ {a}^{3} - 1 - 2a + 2 }{1 - {a}^{3} - 1 + a }$

$\frac{1 {a}^{3} - 4a }{1 - {a}^{2} + a}$

$\frac{ - 3 {a}^{2} }{1 - {a}^{3} }$

$\frac{ - 3 {a}^{2} }{ - a {}^{2} }$

$- 3$