1)17-15х-2х²>0 и х+3>0
2x²+15x-17<0 U x>-3
D=225+136=361
x1=(-15-19)/4=-8,5
x2=(-15+19)/4=1
-8,5-3
x∈(-3;1)
2)(2a²-5a+2)/(ab-2b-3a+6)=(2a-1)(a-2)/(a-2)(b-3)=(2a-1)/(b-3)
2a²-5a+2=0
D=25-16=3
a1=(5-3)/4=1/2 U x2=(5+3)/4=2
ab-2b-3a+6=b(a-2)-3(a-2)=(a-2)(b-3)
3)x-2x<2+log(0,5)6<br>xx