Whakaoti mō x
x\in \left(-\frac{4}{5},\frac{4}{5}\right)
Graph
Tohaina
Kua tāruatia ki te papatopenga
-16+25x^{2}<0
Me whakarea te koreōrite ki te -1 kia tōrunga ai te tau whakarea o te pū tino teitei i 16-25x^{2}. I te mea he tōraro a -1, ka huri te ahunga koreōrite.
x^{2}<\frac{16}{25}
Me tāpiri te \frac{16}{25} ki ngā taha e rua.
x^{2}<\left(\frac{4}{5}\right)^{2}
Tātaitia te pūtakerua o \frac{16}{25} kia tae ki \frac{4}{5}. Tuhia anō te \frac{16}{25} hei \left(\frac{4}{5}\right)^{2}.
|x|<\frac{4}{5}
E mau ana te koreōrite mō |x|<\frac{4}{5}.
x\in \left(-\frac{4}{5},\frac{4}{5}\right)
Tuhia anō te |x|<\frac{4}{5} hei x\in \left(-\frac{4}{5},\frac{4}{5}\right).
Ngā Tauira
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