tolong nomer 2a ya ,terima kasih
Matematika
Amanda02011
Pertanyaan
tolong nomer 2a ya ,terima kasih
1 Jawaban
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1. Jawaban Anonyme
Bab Matriks
Matematika SMA Kelas X
2a] [x 7] = 10
[2 x - 2]
x . (x - 2) - 2 . 7 = 10
x² - 2x - 14 - 10 = 0
x² - 2x - 24 = 0
(x - 6) (x + 4) = 0
x - 6 = 0
x = 6
x + 4 = 0
x = -4