Respuestas

2012-01-10T16:08:58+01:00

 a  ..... x^{2}=16
x=4

b.......x^{2}=9

x=3

c.......x^{2}=144

x=12

d......5x^{2}=45

x^{2}=9

x=3

e.......x^{2}-4x=0

x=0      x=4