x2 + 5x + 4 = 0
x2 + 11x + 30 = 0
y2 + 10 = 6y
3x2 = x + 2
z2 - 30 = 13z
x2 + 8x = 240
6x − 27 = − x2
x2 -10x + 24 = 0
2x + 5 = -x2
w2 - 40 = 3w
x1 = 3, x2 = -9
x1 = 15, x2= -2
x1 = -1, x2 = -4
No tiene raíces reales.
x1 = 12, x2 = -20
x1 = 6, x2 = 4
x1 = -5, x2 = -6
x1 = 1, x2 = -2/3.
No tiene raíces reales.
x1 = 8, x2 = -5
