Ffactor
\frac{\left(7x-5\right)\left(7x+5\right)}{49}
Enrhifo
x^{2}-\frac{25}{49}
Graff
Rhannu
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\frac{49x^{2}-25}{49}
Ffactora allan \frac{1}{49}.
\left(7x-5\right)\left(7x+5\right)
Ystyriwch 49x^{2}-25. Ailysgrifennwch 49x^{2}-25 fel \left(7x\right)^{2}-5^{2}. Gellir ffactorio’r gwahaniaeth rhwng sgwariau gan ddefnyddio’r rheol: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
\frac{\left(7x-5\right)\left(7x+5\right)}{49}
Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.
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