Whakaoti mō x
x=-2
Graph
Tohaina
Kua tāruatia ki te papatopenga
2\times 0^{2}+2x+4=0
Whakareatia te 0 ki te 75, ka 0.
2\times 0+2x+4=0
Tātaihia te 0 mā te pū o 2, kia riro ko 0.
0+2x+4=0
Whakareatia te 2 ki te 0, ka 0.
4+2x=0
Tāpirihia te 0 ki te 4, ka 4.
2x=-4
Tangohia te 4 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
x=\frac{-4}{2}
Whakawehea ngā taha e rua ki te 2.
x=-2
Whakawehea te -4 ki te 2, kia riro ko -2.
Ngā Tauira
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