x2 + 2x + 1
ab2/ax – a2b/ax2
177
998
2pqr + 2qrs – 2rst
349
abc2 + abc
317
ax3/b2y – a2x/b3y
970
508
962
(cde + cd – c) + a – b2
4ab5 - 1
4(a + b2) – 4(a2 + b) + 4(a2 + b2 )
313
