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16. misal
maka
p² - 4p+3 < 0
(p-3)(p-1) = 0
p= 3 dan p = 1
--> x= 1
--> x = 0
_____ 0 _____ 1 ____
uji x bilangan dibawah 0 , misal x = -1
x bilangan diantara 0 dan 1, misal x = 1/2
x bilangan diatas 1 , misal x = 2
++++ 0 ----- 1 ++++
tanda < artinya ambil yang negatif
HP { 0 < x < 1 }