Jawaban:
rumus abc = (-b±√(b² - 4ac))/2a
Penjelasan dengan langkah-langkah:
maka x12 = (-9±√(81- 4.5.-2))/2.5
= (-9±√121)/10
=(-9±11)/10
x1 = (-9+11)/10 = 2/10= 1/5
x2 = (-9-11)/10 = -2
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Jawaban:
rumus abc = (-b±√(b² - 4ac))/2a
Penjelasan dengan langkah-langkah:
maka x12 = (-9±√(81- 4.5.-2))/2.5
= (-9±√121)/10
=(-9±11)/10
x1 = (-9+11)/10 = 2/10= 1/5
x2 = (-9-11)/10 = -2