\left\{ \begin{array} { l } { x - 2 y = 7 } \\ { 4 x - 2 x = - 14 } \end{array} \right.
Whakaoti mō x, y
x=-7
y=-7
Graph
Tohaina
Kua tāruatia ki te papatopenga
2x=-14
Whakaarohia te whārite tuarua. Pahekotia te 4x me -2x, ka 2x.
x=\frac{-14}{2}
Whakawehea ngā taha e rua ki te 2.
x=-7
Whakawehea te -14 ki te 2, kia riro ko -7.
-7-2y=7
Whakaarohia te whārite tuatahi. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.
-2y=7+7
Me tāpiri te 7 ki ngā taha e rua.
-2y=14
Tāpirihia te 7 ki te 7, ka 14.
y=\frac{14}{-2}
Whakawehea ngā taha e rua ki te -2.
y=-7
Whakawehea te 14 ki te -2, kia riro ko -7.
x=-7 y=-7
Kua oti te pūnaha te whakatau.
Ngā Tauira
whārite tapawhā
{ x } ^ { 2 } - 4 x - 5 = 0
Āhuahanga
4 \sin \theta \cos \theta = 2 \sin \theta
whārite paerangi
y = 3x + 4
Arithmetic
699 * 533
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}