Whakaoti mō u
u=-5
Tohaina
Kua tāruatia ki te papatopenga
\frac{-168}{7}=4u-4
Whakawehea ngā taha e rua ki te 7.
-24=4u-4
Whakawehea te -168 ki te 7, kia riro ko -24.
4u-4=-24
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
4u=-24+4
Me tāpiri te 4 ki ngā taha e rua.
4u=-20
Tāpirihia te -24 ki te 4, ka -20.
u=\frac{-20}{4}
Whakawehea ngā taha e rua ki te 4.
u=-5
Whakawehea te -20 ki te 4, kia riro ko -5.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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