Алгебра
133)1,2,3,4
134)2.4.5
135)1,2
Заранее большое спасибо

3551) 1.3x+0.2=0.7x^213/10x+1/5=7/10x^213X+2=7x^213x+2-7x^=0-7x^2+13x+2=07x^2-13x-2=0Д=169-4*7*(-2)=169+56=225=15Х1=13+15/14=2Х2=13-15/14=-1/72)0,09-4X^29/100-4x^2=8/5x9-400x^2=160x9-400x^2=160x=0-400x^2-160X+9=0400x^2-160X-9=0400x^2-160X+9=0д=25600-4*4000*(-9)=25600+14400=40000=200x1=-160+200/800=-9/20x2=-160-200/800=1/20