решите неравенство ✊
2х²-х-1≤0

2x²-x-1<02x²+x-2x-1<0x*(2x+1)-(2x+1)<0(x-1)*(2x+1)<0{x-1<0{2x+1>0{x-1>0{2x+1<0{x<1{x>-1/2{x>1{x<-1/2x є [-1/2, 1]