Ffactor
\left(x-3\right)\left(x+3\right)u^{2}
Enrhifo
u^{2}\left(x^{2}-9\right)
Graff
Rhannu
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u^{2}\left(x^{2}-9\right)
Ffactora allan u^{2}.
\left(x-3\right)\left(x+3\right)
Ystyriwch x^{2}-9. Ailysgrifennwch x^{2}-9 fel x^{2}-3^{2}. Gellir ffactorio’r gwahaniaeth rhwng sgwariau gan ddefnyddio’r rheol: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
u^{2}\left(x-3\right)\left(x+3\right)
Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.
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\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}