Whakaoti mō a
a=-5
a=5
Tohaina
Kua tāruatia ki te papatopenga
|a|=\sqrt{9+4^{2}}
Tātaihia te 3 mā te pū o 2, kia riro ko 9.
|a|=\sqrt{9+16}
Tātaihia te 4 mā te pū o 2, kia riro ko 16.
|a|=\sqrt{25}
Tāpirihia te 9 ki te 16, ka 25.
|a|=5
Tātaitia te pūtakerua o 25 kia tae ki 5.
a=5 a=-5
Whakamahia te tautuhinga o te uara pū.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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Whakarerekētanga
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