Tauwehe
\frac{\left(3z-1\right)\left(3z+1\right)}{27}
Aromātai
\frac{z^{2}}{3}-\frac{1}{27}
Tohaina
Kua tāruatia ki te papatopenga
\frac{9z^{2}-1}{27}
Tauwehea te \frac{1}{27}.
\left(3z-1\right)\left(3z+1\right)
Whakaarohia te 9z^{2}-1. Tuhia anō te 9z^{2}-1 hei \left(3z\right)^{2}-1^{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(3z-1\right)\left(3z+1\right)}{27}
Me tuhi anō te kīanga whakatauwehe katoa.
Ngā Tauira
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Poukapa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
whārite Simultaneous
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Whakarerekētanga
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Whakaurunga
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}