Whakaoti mō x
x=-20
Graph
Tohaina
Kua tāruatia ki te papatopenga
6-2.1x-28=-x
Whakamahia te āhuatanga tohatoha hei whakarea te -0.7 ki te 3x+40.
-22-2.1x=-x
Tangohia te 28 i te 6, ka -22.
-22-2.1x+x=0
Me tāpiri te x ki ngā taha e rua.
-22-1.1x=0
Pahekotia te -2.1x me x, ka -1.1x.
-1.1x=22
Me tāpiri te 22 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.
x=\frac{22}{-1.1}
Whakawehea ngā taha e rua ki te -1.1.
x=\frac{220}{-11}
Whakarohaina te \frac{22}{-1.1} mā te whakarea i te taurunga me te tauraro ki te 10.
x=-20
Whakawehea te 220 ki te -11, kia riro ko -20.
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}