Ответ:
a)y^2+3y/y^2= y(y+3)/y^2=y+3/y
б)x^2-5x/x^2-25=x(x-5)/(x+5)(x-5)=x/x+5
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Ответ:
a)y^2+3y/y^2= y(y+3)/y^2=y+3/y
б)x^2-5x/x^2-25=x(x-5)/(x+5)(x-5)=x/x+5