1)1170
2)5806....................
1) 6.5*3 > 6.5*0.3
2) 1.7*0.5 < 1.7*5
3) 9.1*1.2 < 9.1*12
4) 10.3*9 > 10.3*0.9
Д(дискреминант)=(-6)^2-4*7=36-28=9
х1=(6-3)/2=1,5
х2=(6+3)/2=4,5
1)13 1/4-2 5/27 -10 5/6=13 27/108-2 20/108-10 90/108=11 7/108-10 90/108=
=10 115/108-10 90/108=25/108
25/108*230 1/25=25/108*5751/25=53,25
53,25+46,75=100