Maxima 5.9.0 fails to factor this expression.



/* Someone demonstrated this kind of potential bug in maxima. */


/* This shows there is a bug in maxima's "factor". */

s : ( 7 * x**2 - 1 ) * ( 3 * z + 1 ) * x ;

s1 : expand ( s**3 - 1 );

factor( s1 );

/* s1 must be factorized, but maxima 5.9.0 failed. */