October 2018 2 37 Report

rozwiąz układy równan metoda przeciwnych wspólczynników

\left \{ {{0,4(x+y)-0,1(x-y)=3,1} \atop {-0,2(2x-y)+0,3(x+2y)=0,9}} \right.

\left \{ {{0,3(x+2)-0,7(y-3)=2,7} \atop {-0,9(2x-3)+0,4(3y+6)=-0,3}} \right.

rozwiąż układy dowolna metodą

\left \{ {{(x-1)(x+1)-(y+2)(y-2)=(x-y)(x+y)+x} \atop {x^{2}}-y^{2}=9} \right.

\left \{ {{(x-1) ^{2}-(y^{2}-8)= x^{2}-(y-3)^{2}+4} \atop {\frac{2x}{3}}+y=4} \right


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