Whakaoti mō x
x = \frac{24}{5} = 4\frac{4}{5} = 4.8
Graph
Tohaina
Kua tāruatia ki te papatopenga
3=15\left(-x+5\right)
Tē taea kia ōrite te tāupe x ki 5 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te -x+5.
3=-15x+75
Whakamahia te āhuatanga tohatoha hei whakarea te 15 ki te -x+5.
-15x+75=3
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
-15x=3-75
Tangohia te 75 mai i ngā taha e rua.
-15x=-72
Tangohia te 75 i te 3, ka -72.
x=\frac{-72}{-15}
Whakawehea ngā taha e rua ki te -15.
x=\frac{24}{5}
Whakahekea te hautanga \frac{-72}{-15} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -3.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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Whakarerekētanga
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Whakaurunga
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Ngā Tepe
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