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misal :
a. (3-2x) < 4
kalo dikuadratkan :
9 - 12x + 4x² < 16
4x² -12x + 9- 16< 0
4x² -12x - 7 <0
4x² - 12x - 7 = 0
(2x+1)(2x-7)=0
x = -1/2 atau x= 7/2
setauku seperti itu. semoga bermanfaat!!