Ffactor
2\left(x-2y\right)\left(x+2y\right)
Enrhifo
2\left(x^{2}-4y^{2}\right)
Rhannu
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2\left(x^{2}-4y^{2}\right)
Ffactora allan 2.
\left(x-2y\right)\left(x+2y\right)
Ystyriwch x^{2}-4y^{2}. Ailysgrifennwch x^{2}-4y^{2} fel x^{2}-\left(2y\right)^{2}. Gellir ffactorio’r gwahaniaeth rhwng sgwariau gan ddefnyddio’r rheol: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
2\left(x-2y\right)\left(x+2y\right)
Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.
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Terfynau
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