\left. \begin{array} { l } { \text { Simplifica } } \\ { \frac { x ^ { 2 } - 4 } { x ^ { 2 } - 4 x + 4 } } \end{array} \right.
求值
-S\left(Re(p)\left(Re(l)\left(Re(f)\left(Re(a)Im(c)+Re(c)Im(a)\right)+Im(f)\left(Re(a)Re(c)-Im(a)Im(c)\right)\right)+Im(l)\left(-Im(f)\left(Re(a)Im(c)+Re(c)Im(a)\right)+Re(f)\left(Re(a)Re(c)-Im(a)Im(c)\right)\right)\right)+Im(p)\left(-Im(l)\left(Re(f)\left(Re(a)Im(c)+Re(c)Im(a)\right)+Im(f)\left(Re(a)Re(c)-Im(a)Im(c)\right)\right)+Re(l)\left(-Im(f)\left(Re(a)Im(c)+Re(c)Im(a)\right)+Re(f)\left(Re(a)Re(c)-Im(a)Im(c)\right)\right)\right)\right),\ \frac{x+2}{x-2}
共享
已复制到剪贴板
示例
二次方程式
{ x } ^ { 2 } - 4 x - 5 = 0
三角学
4 \sin \theta \cos \theta = 2 \sin \theta
线性方程
y = 3x + 4
算术
699 * 533
矩阵
\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]
联立方程
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
微分
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
积分
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
限制
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}