Tauwehe
\frac{\left(7m-54\right)\left(7m+54\right)}{81}
Aromātai
\frac{49m^{2}}{81}-36
Tohaina
Kua tāruatia ki te papatopenga
\frac{49m^{2}-2916}{81}
Tauwehea te \frac{1}{81}.
\left(7m-54\right)\left(7m+54\right)
Whakaarohia te 49m^{2}-2916. Tuhia anō te 49m^{2}-2916 hei \left(7m\right)^{2}-54^{2}. Ka taea te rerekētanga o ngā pūrua te whakatauwehe mā te ture: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
\frac{\left(7m-54\right)\left(7m+54\right)}{81}
Me tuhi anō te kīanga whakatauwehe katoa.
Ngā Tauira
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