Combine[expr]
puts terms in a sum over a common denominator and cancels factors in the result. Combine
is similar to Together
, but accepts the option Expanding
and works usually better than Together
for polynomials involving rationals with sums in the denominator.
[((a - b) (c - d))/e + g] Combine
Here the result from Together
where the numerator is automatically expanded.
Together[((a - b) (c - d))/e + g]
If the option Expanding
is set to True
, the result of Combine
is the same as Together
, but uses a slightly different algorithm.
[((a - b) (c - d))/e + g, Expanding -> True] Combine