28/(х+2)+12/(х-2)=2,15; |*(х+2)*(х-2)
28(х-2)+12(х+2)=2,15(х+2)*(х-2);
28х-56+12х+24=2,15х²-8,6;
2,15х²-40x+23,4=0;
D=40²-4*2,15*23,4=1600-201,24=1398,76=37,4²
x1=(40+37,4)/4,3=18
x2=(40-37,4)/4,3=26/43
28/(х+2)+12/(х-2)=2,15; |*(х+2)*(х-2)
28(х-2)+12(х+2)=2,15(х+2)*(х-2);
28х-56+12х+24=2,15х²-8,6;
2,15х²-40x+23,4=0;
D=40²-4*2,15*23,4=1600-201,24=1398,76=37,4²
x1=(40+37,4)/4,3=18
x2=(40-37,4)/4,3=26/43