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asenysh250103

Ответ:

Объяснение:

frac{4a^{2}+a-3 }{a^{2} -1} =frac{4(a-frac{3}{4})(a+1) }{(a-1)(a+1)}= frac{4a-3}{a-1}

frac{3a^{2}-5a-2 }{a^{2}-4 } =3(a+frac{1}{2} )(a-2)/(a-2)(a+2)=frac{3a+frac{3}{2} }{a+2}

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