Evaluate
x^{2}+4x-z-7
Differentiate w.r.t. x
2\left(x+2\right)
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7x^{2}-2x+4z+1-x-9-6x^{2}+7x-5z+1
Combine 3x^{2} and 4x^{2} to get 7x^{2}.
7x^{2}-3x+4z+1-9-6x^{2}+7x-5z+1
Combine -2x and -x to get -3x.
7x^{2}-3x+4z-8-6x^{2}+7x-5z+1
Subtract 9 from 1 to get -8.
x^{2}-3x+4z-8+7x-5z+1
Combine 7x^{2} and -6x^{2} to get x^{2}.
x^{2}+4x+4z-8-5z+1
Combine -3x and 7x to get 4x.
x^{2}+4x-z-8+1
Combine 4z and -5z to get -z.
x^{2}+4x-z-7
Add -8 and 1 to get -7.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\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]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}