Question

inequação: 5x . (x-1) < 0-x ???

Answer 1

aplica a distributiva

5x^2-5x<0-x
5x^2-4x<0

a=5
b=-4
c=0

delta=(-4)^2-4*5*0
delta=16

x=-(-4)+-V16/2*5
x=4+-4/10
x'=8/10= 4/5= 0,8
x"=0/10= 0