Serba - Serbi Persamaan Kuadrat

Posted by Oji Bejo on Thursday, June 20, 2013






Assalamualaikum,,,,,,,
langsung praktek rumus mawon nggeh,,,,

- Soal
Akar - akar persamaan kuadrat dari    adalah x(1) dan x(2). Jika x(1) = 3x(2) maka nilai c adalah?

a) 10
b) 11
c) 12
d) 13
e) 14


- Jawab
ac(k + 1)^2 = kb^2

maka,
1(c)(3 + 1)^2 = 3(-8)^2
16c = 64 (3)
c = 4 (3) = 12
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