Ffactor
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Enrhifo
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Rhannu
Copïo i clipfwrdd
\left(6s-11t\right)\left(6s+11t\right)
Ailysgrifennwch 36s^{2}-121t^{2} fel \left(6s\right)^{2}-\left(11t\right)^{2}. Gellir ffactorio’r gwahaniaeth rhwng sgwariau gan ddefnyddio’r rheol: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
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