Whakaoti mō x
x = \frac{5}{4} = 1\frac{1}{4} = 1.25
Graph
Tohaina
Kua tāruatia ki te papatopenga
1-2x=2\left(x-2\right)
Tē taea kia ōrite te tāupe x ki 2 nā te kore tautuhi i te whakawehenga mā te kore. Me whakarea ngā taha e rua o te whārite ki te x-2, arā, te tauraro pātahi he tino iti rawa te kitea o x-2,2-x.
1-2x=2x-4
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te x-2.
1-2x-2x=-4
Tangohia te 2x mai i ngā taha e rua.
1-4x=-4
Pahekotia te -2x me -2x, ka -4x.
-4x=-4-1
Tangohia te 1 mai i ngā taha e rua.
-4x=-5
Tangohia te 1 i te -4, ka -5.
x=\frac{-5}{-4}
Whakawehea ngā taha e rua ki te -4.
x=\frac{5}{4}
Ka taea te hautanga \frac{-5}{-4} te whakamāmā ki te \frac{5}{4} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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Whakarerekētanga
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