Ffactor
\left(xy-3z\right)\left(x^{2}y^{2}+3xyz+9z^{2}\right)
Enrhifo
\left(xy\right)^{3}-27z^{3}
Rhannu
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\left(xy-3z\right)\left(x^{2}y^{2}+3xyz+9z^{2}\right)
Ailysgrifennwch x^{3}y^{3}-27z^{3} fel \left(xy\right)^{3}-\left(3z\right)^{3}. Gellir ffactorio'r gwahaniaeth rhwng ciwbiau gan ddefnyddio'r rheol: a^{3}-b^{3}=\left(a-b\right)\left(a^{2}+ab+b^{2}\right).
Enghreifftiau
Hafaliad cwadratig
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