(5x-4) (5-4x)(x-1)<0

Question

(5x-4) (5-4x)(x-1)<0

Answer 1

5*4(x-0.8)(x-1.25)(x-1)>0
20(x-0.8)(x-1.25)(x-1)>0
(x-0.8)(x-1.25)(x-1)>0
x∈(0.8; 1)∨(1.25; +∞)