Whakaoti mō x
x=2
Graph
Tohaina
Kua tāruatia ki te papatopenga
10x-20=2x-4
Whakamahia te āhuatanga tohatoha hei whakarea te 5 ki te 2x-4.
10x-20-2x=-4
Tangohia te 2x mai i ngā taha e rua.
8x-20=-4
Pahekotia te 10x me -2x, ka 8x.
8x=-4+20
Me tāpiri te 20 ki ngā taha e rua.
8x=16
Tāpirihia te -4 ki te 20, ka 16.
x=\frac{16}{8}
Whakawehea ngā taha e rua ki te 8.
x=2
Whakawehea te 16 ki te 8, kia riro ko 2.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
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whārite paerangi
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Arithmetic
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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
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Whakaurunga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Ngā Tepe
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}