Y=2x+3 Y=x2-4x+8 Dan Y=5x+4 Y=x2+13x-16
Matematika
fandi7243
Pertanyaan
Y=2x+3
Y=x2-4x+8
Dan
Y=5x+4
Y=x2+13x-16
Y=x2-4x+8
Dan
Y=5x+4
Y=x2+13x-16
1 Jawaban
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1. Jawaban Pychoco
Y=2x+3
Y=x2-4x+8
Maka:
2x + 3 = x^2 - 4x + 8
0 = x^2 - 4x - 2x + 8 - 3
0 = x^2 - 6x + 5
0 = (x - 1) (x - 5)
x = 1 / x = 5
Y=5x+4
Y=x2+13x-16
Maka:
5x + 4 = x^2 + 13x - 16
0 = x^2 + 13x - 5x - 16 - 4
0 = x^2 + 8x - 20
0 = (x + 10) (x - 2)
x = -10 / x = 2