Whakaoti mō x
x=4
Graph
Tohaina
Kua tāruatia ki te papatopenga
2-2x-14+8x=5+7
Whakamahia te āhuatanga tohatoha hei whakarea te -2 ki te x+7.
-12-2x+8x=5+7
Tangohia te 14 i te 2, ka -12.
-12+6x=5+7
Pahekotia te -2x me 8x, ka 6x.
-12+6x=12
Tāpirihia te 5 ki te 7, ka 12.
6x=12+12
Me tāpiri te 12 ki ngā taha e rua.
6x=24
Tāpirihia te 12 ki te 12, ka 24.
x=\frac{24}{6}
Whakawehea ngā taha e rua ki te 6.
x=4
Whakawehea te 24 ki te 6, kia riro ko 4.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
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
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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}