Enrhifo
-\frac{2m^{2}-14m-3}{\left(7-m\right)^{2}}
Gwahaniaethu w.r.t. m
\frac{2\left(52-7m\right)}{\left(7-m\right)\left(m-7\right)^{2}}
Rhannu
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\frac{3}{\left(m-7\right)^{2}}+\frac{2m}{7-m}
Ffactora m^{2}-14m+49.
\frac{3}{\left(m-7\right)^{2}}+\frac{2m\left(-1\right)\left(m-7\right)}{\left(m-7\right)^{2}}
I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin \left(m-7\right)^{2} a 7-m yw \left(m-7\right)^{2}. Lluoswch \frac{2m}{7-m} â \frac{-\left(m-7\right)}{-\left(m-7\right)}.
\frac{3+2m\left(-1\right)\left(m-7\right)}{\left(m-7\right)^{2}}
Gan fod gan \frac{3}{\left(m-7\right)^{2}} a \frac{2m\left(-1\right)\left(m-7\right)}{\left(m-7\right)^{2}} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.
\frac{3-2m^{2}+14m}{\left(m-7\right)^{2}}
Gwnewch y gwaith lluosi yn 3+2m\left(-1\right)\left(m-7\right).
\frac{3-2m^{2}+14m}{m^{2}-14m+49}
Ehangu \left(m-7\right)^{2}.
Enghreifftiau
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