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2x > 6
x > 3
-(2x-5) >1
2x-5 < -1
2x < 2
x < 1
Jadi x< 1 atau x > 3
b. x²+x-1 >1
x²+x -2 > 0
(x +2)(x-1) >0
x <-2 atau x > 1
x²+ x - 1 < -1
x² + x < 0
x (x+1) < 0
-1 < x < 0
Jadi -1 < x < 0 atau x > 3
c. (x-3)² > (x-1)²
x² - 6x + 9 > x² - 2x + 1
8 > 4x
2 > x