Respuestas

2013-02-04T00:26:00+01:00

la formula es
x = (2+-(4-(4(-1)))^0.5)/2
desarrollas poco a poco
x = (2 +- (4 +4)^0.5)/2
x = (2+-(8)^.5)/2
x = (2+-(2.82))/2
x1 = 2.41
x2 = -0.41.