Question

answer please quick as quick

Answer 1

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

$(\frac{( - 2)^{2} - 1 }{ - 2} )( \frac{( - 2)^{2} + 1 }{ - 2} )( \frac{( - 2)^{4} + 1}{ (- 2)^{2} } )$

$( \frac{4 -1 }{ - 2} )( \frac{4 + 1}{ - 2} )( \frac{16 + 1}{4} ) \\ \\ ( \frac{3}{ - 2} )( \frac{5}{ - 2} )( \frac{17}{4} ) \\ \\ \frac{255}{16}$

Answer 2

Putting a=-2
(-2-1/-2)(-2+1/-2)(-2²+1/-2²)
=-1.5×-2.5×-4.25
=-15.9375