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4x² - 12 + 13x = 0
4x² + 13x - 12 = 0
4x² + 13x - 12 → 4 x 12
48
1 x 48
2 x 24
3 x 16
4x² + 13x - 12 = 0
4x² + 16x - 3x - 12 = 0
4x(x + 4) - 3(x + 4) = 0
(4x - 3)(x + 4) = 0
4x - 3 = 0 atau x + 4 = 0
4x = 3 x = - 4
x = 3/4
4x^2+13x-12=0
(4x-3)(x+4)=0
4x-3=0
4x=3
x=3/4
x+4=0
x=-4