Ffactor
20r\left(4r-7\right)^{2}
Enrhifo
20r\left(4r-7\right)^{2}
Rhannu
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20\left(16r^{3}-56r^{2}+49r\right)
Ffactora allan 20.
r\left(16r^{2}-56r+49\right)
Ystyriwch 16r^{3}-56r^{2}+49r. Ffactora allan r.
\left(4r-7\right)^{2}
Ystyriwch 16r^{2}-56r+49. Defnyddiwch y fformiwla sgwâr perffaith, a^{2}-2ab+b^{2}=\left(a-b\right)^{2}, lle a=4r a b=7.
20r\left(4r-7\right)^{2}
Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.
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