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kalo mmg sulit, cek dulu aja Diskriminan nya.
D=b² - 4ac = (-18)² - 4(17)(3) = 324 - 204 = 120
D > 0 maka bisa difaktorkan dg rumus ABC..
yuk qt pakai..
Y1,2 = (-b +- √D) / 2a
= (18 +- √120)/ 2(17)
= (18 +- 2√30)/34
maka
Y1 = (18 + 2√30) / 34 = 9/17 + 1/17√30
Y2 = (18 - 2√30) / 34 = 9/17 - 1/17√30