Fw: Non-polinomial equations



Hi,
I'm new to Maxima.
I'd like to know if maxima can solve equations with absolute values or
irrational equations.
I tried the followings:

1) solve(abs(x)=2,x);

and maxima said me:
 [ABS(x)=2]

2) solve(sqrt(x+1)=2*x,x);
and maxima:
 [x=SQRT(x+1)/2]

Isn't "solve" the right function?

Thanks,
 Mimmo