Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
3+8+4x+1=20-2\left(2-x\right)
Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 4+2x.
11+4x+1=20-2\left(2-x\right)
Tāpirihia te 3 ki te 8, ka 11.
12+4x=20-2\left(2-x\right)
Tāpirihia te 11 ki te 1, ka 12.
12+4x=20-4+2x
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te 2-x.
12+4x=16+2x
Tangohia te 4 i te 20, ka 16.
12+4x-2x=16
Tangohia te 2x mai i ngā taha e rua.
12+2x=16
Pahekotia te 4x me -2x, ka 2x.
2x=16-12
Tangohia te 12 mai i ngā taha e rua.
2x=4
Tangohia te 12 i te 16, ka 4.
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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Poukapa
\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]
whārite Simultaneous
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Whakarerekētanga
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Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
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