Whakaoti mō x
x=-\frac{2}{5}=-0.4
Graph
Tohaina
Kua tāruatia ki te papatopenga
5x=2-4
Tangohia te 4 mai i ngā taha e rua.
5x=-2
Tangohia te 4 i te 2, ka -2.
x=\frac{-2}{5}
Whakawehea ngā taha e rua ki te 5.
x=-\frac{2}{5}
Ka taea te hautanga \frac{-2}{5} te tuhi anō ko -\frac{2}{5} mā te tango i te tohu tōraro.
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{ x } ^ { 2 } - 4 x - 5 = 0
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