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2x - x > 1-3
x > -2
(2x + 3)² > (x + 1)²
4x² +12x + 9 > x² + 2x + 1
3x² + 10x + 8 > 0
(3x - 2 ) (x + 4) > 0
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3x - 2 = 0
x = 2/3
dan
x + 4 = 0
x = -4
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selesaikan menggunakan garis bilangan; karena > maka pilih bagian yang positif
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penyelesaian -4 < x < 2/3