Ffactor
x\left(xy-z\right)\left(xy+z\right)
Enrhifo
x\left(\left(xy\right)^{2}-z^{2}\right)
Rhannu
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x\left(x^{2}y^{2}-z^{2}\right)
Ffactora allan x.
\left(xy-z\right)\left(xy+z\right)
Ystyriwch x^{2}y^{2}-z^{2}. Ailysgrifennwch x^{2}y^{2}-z^{2} fel \left(xy\right)^{2}-z^{2}. Gellir ffactorio’r gwahaniaeth rhwng sgwariau gan ddefnyddio’r rheol: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
x\left(xy-z\right)\left(xy+z\right)
Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.
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