X^2 - bx + 6 = 0 x1 + 2x2 = 8 x2= ?
Matematika
acheellernita
Pertanyaan
X^2 - bx + 6 = 0
x1 + 2x2 = 8
x2= ?
x1 + 2x2 = 8
x2= ?
1 Jawaban
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1. Jawaban EdiHeaven
x²-bx+6= 0
x1x2=6/1
x1x2=6
x1+2x2=8
x1=8-2x2
(8-2x2)x2=6
2x2²-8x2+6=0 bagi 2
x2²-4x2+3=0
(x2-3)(x2-1)
x2=3 atau x2=1
maka
x2 = 3 atau x2=1