Whakaoti mō y
y=-\sqrt{7}i\approx -0-2.645751311i
y=\sqrt{7}i\approx 2.645751311i
Tohaina
Kua tāruatia ki te papatopenga
y=\sqrt{7}i y=-\sqrt{7}i
Kua oti te whārite te whakatau.
y^{2}+7=0
Me tāpiri te 7 ki ngā taha e rua.
y=\frac{0±\sqrt{0^{2}-4\times 7}}{2}
Kei te āhua arowhānui tēnei whārite: ax^{2}+bx+c=0. Me whakakapi 1 mō a, 0 mō b, me 7 mō c i te tikanga tātai pūrua, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
y=\frac{0±\sqrt{-4\times 7}}{2}
Pūrua 0.
y=\frac{0±\sqrt{-28}}{2}
Whakareatia -4 ki te 7.
y=\frac{0±2\sqrt{7}i}{2}
Tuhia te pūtakerua o te -28.
y=\sqrt{7}i
Nā, me whakaoti te whārite y=\frac{0±2\sqrt{7}i}{2} ina he tāpiri te ±.
y=-\sqrt{7}i
Nā, me whakaoti te whārite y=\frac{0±2\sqrt{7}i}{2} ina he tango te ±.
y=\sqrt{7}i y=-\sqrt{7}i
Kua oti te whārite te whakatau.
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