Whakaoti mō x
x=\frac{8}{39}\approx 0.205128205
Graph
Tohaina
Kua tāruatia ki te papatopenga
4=19.5x
Tē taea kia ōrite te tāupe x ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te x.
19.5x=4
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
x=\frac{4}{19.5}
Whakawehea ngā taha e rua ki te 19.5.
x=\frac{40}{195}
Whakarohaina te \frac{4}{19.5} mā te whakarea i te taurunga me te tauraro ki te 10.
x=\frac{8}{39}
Whakahekea te hautanga \frac{40}{195} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
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