Whakaoti mō x
x=-16
Graph
Tohaina
Kua tāruatia ki te papatopenga
8+44+x+x=5\times 4
Me whakarea ngā taha e rua ki te 4.
52+x+x=5\times 4
Tāpirihia te 8 ki te 44, ka 52.
52+2x=5\times 4
Pahekotia te x me x, ka 2x.
52+2x=20
Whakareatia te 5 ki te 4, ka 20.
2x=20-52
Tangohia te 52 mai i ngā taha e rua.
2x=-32
Tangohia te 52 i te 20, ka -32.
x=\frac{-32}{2}
Whakawehea ngā taha e rua ki te 2.
x=-16
Whakawehea te -32 ki te 2, kia riro ko -16.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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