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perhatikan, hasilnya selalu satu , sehingga pangkat = 0
a)
2x + 6 = 0
2x = -6
x = -6/2
x = -3
b)
(3x - 4)/2 = 0
3x - 4 = 0
3x = 4
x = 4/3
c)
-5x - 10 = 0
-5x = 10
x = 10 : (-5)
x = -2
d)
x² - 4x - 5 = 0
(x - 5)(x + 1) = 0
x = 5 dan x = -1
e)
2x² - 7x + 6 = 0
(2x - 3)(x - 2) = 0
2x = 3 dan x = 2
x = 3/2