Question

faça a equação de 2° grau:
5(2x-1)/6 = x(x+1)/5 - x-4/12

Answer 1

(10x - 5) /6 = (x² + x)/5 - (x-4)/12 (mmc)
10x - 5 / 6 = (12x² + 12x - 5x - 20 ) / 60
60.(10x - 5) = 6.(12x² + 12x - 5x - 20)
600x - 300 = 72x² + 72x - 30x - 120 (:6)
12x² + 12x - 5x -20 - 100x + 50 = 0
12x² + 93x +30 = 0 (:3)
4x² + 31x + 10 = 0