Question

8×-2∠×-1
2ײ-×-1≤0
решите систему неравенств

Answer 1

8х-2<х-1

8х-х< -1+2

7х<1

х< 1/7

2х²-х-1≤0

2х²+х-2х-1≤0

х×(2х+1)-(2х+1)≤0

(2х+1)×(х-1)≤0

{х≤ -1/2

{х⩾ 1

{х⩾ -1/2

{х≤ 1

х∈∅

х∈ [ -1/2, 1 ]

/ - дробь