Aromātai
\left(2x+y\right)^{2}-9
Whakaroha
4x^{2}+4xy+y^{2}-9
Tohaina
Kua tāruatia ki te papatopenga
\left(2x+y\right)^{2}-3^{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}, ina a=2x+y me b=3.
4x^{2}+4xy+y^{2}-3^{2}
Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(2x+y\right)^{2}.
4x^{2}+4xy+y^{2}-9
Tātaihia te 3 mā te pū o 2, kia riro ko 9.
\left(2x+y\right)^{2}-3^{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}, ina a=2x+y me b=3.
4x^{2}+4xy+y^{2}-3^{2}
Whakamahia te ture huarua \left(a+b\right)^{2}=a^{2}+2ab+b^{2} hei whakaroha \left(2x+y\right)^{2}.
4x^{2}+4xy+y^{2}-9
Tātaihia te 3 mā te pū o 2, kia riro ko 9.
Ngā Tauira
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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}