Question

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Answer 1

$\frac{1-2(a+2)-2(a-2)}{(a-2)(a+2)} *(4a -3a+ \frac{2}{4} )= \frac{a}{2}$

Answer 2

1-(2(а+2)-2(а-2)/(а-2)(а+2)) *(4а -3а+2/4)=а/2