cara faktorinnya gmb
2x² - x - 1 = 0![]()
2x² - x - 1 = 0
Jawaban:
[tex]x_{1} = - \frac{1}{2} \: \: x _{2} = 1[/tex]
Penjelasan dengan langkah-langkah:
2x²-x-1 = 0
(2x+1)(x-1) = 0
2x+1 = 0
2x = -1
x = -½
x-1 = 0
x = 1
Jawaban:
x = -b ± √b² - 4ac / 2a
a = 2
b = -1
c = -1
x = -(-1)± √ (-1)² - 4 . 2 (-1) / 2 . 2
x = 1 ± 3 / 4
x 1 + 3 / 4
x= 1 - 3 / 4
x = 1
x = -1/2
Penjelasan dengan langkah-langkah:
maaf kalo salah
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