Question

rezolvati in R ineciatia x(x+5)-2>4x​ dau coroana

Answer 1

Răspuns:

x²+5x-2>4x

x²+5x-2-4x>0

x²+x-2>0

x²+2x-x-2>0

x(x+2)(x-1)>0

{x+2>0

{x-1>0

{x+2<0

{x-1<0

{x>-2

{x>1

{x<-2

{x<1

{x€(1,+∞)

{x€(-∞,-2)

x€(-∞,-2)U(1,+∞)