Penyelesaian pertidaksamaan |x2-x-2|<4 adalah...

|x2-x-2|<4
= |x × 2 - x - 2|<4
= |2x - x - 2| <4
= |2x - 1x - 2| <4
= |( 2 - 1)x - 2| <4
= |1x - 2| <4
= |x - 2| <4
= x - 2 <4 , x - 2 ≥ 0
— ( x - 2 ) <4 , x - 2 < 0
= x < 6, x ≥ 2
x > - 2 , x < 2
= x £ [ 2 , 6 ]
x £ [ -2 , 2 ]
= x £ [ -2 , 6 ]


semoga anda puas ☺