Question

encontre as raízes da equação 6 (1 - x )+(x + 5 ) (x - 2) = 3 (4-x)

Answer 1

6 (1 - x )+(x + 5 ) (x - 2) = 3 (4-x)
6 -6x + (x² -2x +5x -10) = 12 -3x
6 -6x + x² -2x +5x -10 -12 +3x = 0
x² -16 = 0
x² = 16
x = +-Raiz(16)
x' = -4
x'' = +4