Ответ:1)z
2)-5y-25
Объяснение:
z2+z/z2=z(z+1)/z2=z+1/z
y2-5y/y2-25=y(y-5)/(y-5)(y+5)=y/y+5
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Ответ:1)z
2)-5y-25
Объяснение:
z2+z/z2=z(z+1)/z2=z+1/z
y2-5y/y2-25=y(y-5)/(y-5)(y+5)=y/y+5