1) 9x^2 <= -5x
9x^2+5x<=0
x(9x+5) <=0
x=0 9x+5 =0
x=-5/9
x [ -5/9 ; 0]
2) 6x^2 - x - 35 >0
D=29
x= 1 +/- 29 / 12
x1= 30/12=5/2 x2=28/12=7/3
x ( - бесконеч ; 5/2 ) ( 7/3 ; +бесконеч)
