Rydych wedi rhoi' r canlyniad cywir, ond heb ei leihau. Rhowch eich canlyniadau wedi' u lleihau o hyd. Bydd y dasg hon yn cael ei chyfrif fel heb ei datrys yn gywir.
You entered the correct result, but not reduced. Enter your results as reduced, if the use of this form is forced in the options. This question will be counted as not correctly solved.