Whakaoti mō x
x=\frac{2}{21}\approx 0.095238095
Graph
Tohaina
Kua tāruatia ki te papatopenga
x=-\frac{1}{3}+\frac{3}{7}
Me tāpiri te \frac{3}{7} ki ngā taha e rua.
x=-\frac{7}{21}+\frac{9}{21}
Ko te maha noa iti rawa atu o 3 me 7 ko 21. Me tahuri -\frac{1}{3} me \frac{3}{7} ki te hautau me te tautūnga 21.
x=\frac{-7+9}{21}
Tā te mea he rite te tauraro o -\frac{7}{21} me \frac{9}{21}, me tāpiri rāua mā te tāpiri i ō raua taurunga.
x=\frac{2}{21}
Tāpirihia te -7 ki te 9, ka 2.
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}