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syarat mpy 2 akar real berbeda, D > 0
b² - 4ac > 0
(2 - 2p)² - 4.p.p > 0
4 - 8p + 4p² - 4p² > 0
-8p > -4
p < 1/2
2) kx² + kx + 3 = 0
syarat mpy akar kembar: D = 0
b² - 4ac = 0
k² - 4.k.3 = 0
k² - 12k = 0
k (k - 12) = 0
k = 0 atau k = 12
3) 3x² - 5x + 2 = 0
D = b² - 4ac
= (-5)² - 4.3.2
= 25 - 24
= 1
4) 6x² - 23x + 7 = 0
(3x - 1) (2x - 7) = 0
x = 1/3 atau x = 7/2
5) 3x² - 7x = 0
x (3x - 7) = 0
x = 0 atau x = 7/3
semoga membantu :)