Question

(5у + 4) (1,1у -3,3) = 0

Answer 1

5,5y^2+4,4y-16,5y-13,2=0
5,5y^2-12,1y-13,2=0
55y^2-121y-132=0
D=14641+29040=43681=209^2
y1=3     y2=-0,8