Whakaoti mō x
x=-1
Graph
Tohaina
Kua tāruatia ki te papatopenga
2.5-4.5-3x=1
Tāpirihia te 2 ki te 0.5, ka 2.5.
-2-3x=1
Tangohia te 4.5 i te 2.5, ka -2.
-3x=1+2
Me tāpiri te 2 ki ngā taha e rua.
-3x=3
Tāpirihia te 1 ki te 2, ka 3.
x=\frac{3}{-3}
Whakawehea ngā taha e rua ki te -3.
x=-1
Whakawehea te 3 ki te -3, kia riro ko -1.
Ngā Tauira
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{ x } ^ { 2 } - 4 x - 5 = 0
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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