y(25y^2-10y+1)=0
y1=0
25y^2-10y+1=0
D= b^2-4ac = 100 - 4*25*1 = 100 - 100 = 0
y2= -b+√D/2a = 10+0/50 = 1/5
(5v6-6v2)*(5v6-6v2)=25v36-30v12-30v12+36v4=25*6-60v12+36*2=150-60v12+72=222-60v12
v-корень