Question

answer this please ​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

$(x + y) \times (x - y) = x^{2} - {y}^{2}$
hence
$(a - \frac{1}{a} ) \times (a - \frac{1}{a} ) = {a }^{2} - { \frac{1}{a} }^{2}$
so, we get

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


hence , we will get

$({a}^{2})^{2} - ({ \frac{1}{a} }^{2}) {}^{2}$
that gives us