algebra
posted by
Dee
.
Help me factor x^2 2x  4 = 0 and 3x^2 + x + 3 = 0.

algebra 
Kuai
No factor

algebra 
Steve
you can tell there are no rational roots because the discriminant is negative. No real roots, no factoring.
You can factor over the irrationals or complex, though, getting
(x1√5)(x1+√5)
and
1/12 (6x+1i√35)(x+1+i√35)