Aromātai
81x^{2}-1
Whakaroha
81x^{2}-1
Graph
Tohaina
Kua tāruatia ki te papatopenga
\left(9x\right)^{2}-1^{2}
Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
9^{2}x^{2}-1^{2}
Whakarohaina te \left(9x\right)^{2}.
81x^{2}-1^{2}
Tātaihia te 9 mā te pū o 2, kia riro ko 81.
81x^{2}-1
Tātaihia te 1 mā te pū o 2, kia riro ko 1.
\left(9x\right)^{2}-1^{2}
Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
9^{2}x^{2}-1^{2}
Whakarohaina te \left(9x\right)^{2}.
81x^{2}-1^{2}
Tātaihia te 9 mā te pū o 2, kia riro ko 81.
81x^{2}-1
Tātaihia te 1 mā te pū o 2, kia riro ko 1.
Ngā Tauira
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Whakaurunga
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Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}