(35/y-2)*(y*2)=42
35y-2y^2=42
-2y^2+35y-42=0
delta=1225-336=889
pierwiastek delta = pierwiastek 889
y=-35-pierwiastek 889 /-4= 35+pierwiastek 889/4
y= -35+pierwiastek 889 /-4= 35-pierwiastek 889/4
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35y-2y^2=42
-2y^2+35y-42=0
delta=1225-336=889
pierwiastek delta = pierwiastek 889
y=-35-pierwiastek 889 /-4= 35+pierwiastek 889/4
y= -35+pierwiastek 889 /-4= 35-pierwiastek 889/4