Whakaoti mō x
x\in \left(-3,3\right)
Graph
Tohaina
Kua tāruatia ki te papatopenga
x^{2}<\frac{-18}{-2}
Whakawehea ngā taha e rua ki te -2. I te mea he tōraro a -2, ka huri te ahunga koreōrite.
x^{2}<9
Whakawehea te -18 ki te -2, kia riro ko 9.
x^{2}<3^{2}
Tātaitia te pūtakerua o 9 kia tae ki 3. Tuhia anō te 9 hei 3^{2}.
|x|<3
E mau ana te koreōrite mō |x|<3.
x\in \left(-3,3\right)
Tuhia anō te |x|<3 hei x\in \left(-3,3\right).
Ngā Tauira
whārite tapawhā
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\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}