ГДЗ Математика 8 клас Істер (2025) - 1 ЧАСТИНА

Спростіть:

1) (m+2)/m^2 – 1/m = (m+2-m)/m^2 = 2/m^2 ;
2) 5/n^5 + (3-4n^2)/n^7 = (5n^2+ 3-4n^2)/n^7 = (n^2+ 3)/n^7 ;
3) (x-y)/x^2 – (y-x)/xy = (y(x-y)- x(y-x))/(x^2 y) = (xy- y^2- xy+ x^2)/(x^2 y) = (x^2- y^2)/(x^2 y);
4) (c-2p)/(cp^2 ) + (2c-p)/(pc^2 ) = (c(c-2p)+ p(2c-p))/(p^2 c^2 ) = (c^2- 2cp+2cp- p^2)/(p^2 c^2 ) = (c^2- p^2)/(p^2 c^2 ).