y=logx y^2+2y-8=0 D1=1+8=9=3^2 y1=-1+3=2 y2=-1-3=-4 logx=2 logx=-4
<em>5,3*123,5-5,3*23,5=5.3*(123.5-23.5)=5.3*100=</em><em>530</em>