Whakaoti mō b
b=1
Tohaina
Kua tāruatia ki te papatopenga
-9=\frac{-5\times 8}{4}+b
Tuhia te -\frac{5}{4}\times 8 hei hautanga kotahi.
-9=\frac{-40}{4}+b
Whakareatia te -5 ki te 8, ka -40.
-9=-10+b
Whakawehea te -40 ki te 4, kia riro ko -10.
-10+b=-9
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
b=-9+10
Me tāpiri te 10 ki ngā taha e rua.
b=1
Tāpirihia te -9 ki te 10, ka 1.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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Whakarerekētanga
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