3. X* - 3/4x - 1/7 < 0
Matematika
muhammadqoirul
Pertanyaan
3. X* - 3/4x - 1/7 < 0
1 Jawaban
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1. Jawaban Anonyme
x² - 3/4 x - 1/7 < 0 ... kalikan 28
28x² - 21x - 4 < 0
Pembuat nol
28x² - 21x - 4 = 0
dg rumus abc
x1 = (21 - √889)/56
x2 = (21 + √889)/56
Nilai x yg memenuhi :
(21 - √889)/56 < x < (21 + √889)/56