Evaluate
x-20
Differentiate w.r.t. x
1
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\left(\sqrt{x}\right)^{2}-\left(2\sqrt{5}\right)^{2}
Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
x-\left(2\sqrt{5}\right)^{2}
Calculate \sqrt{x} to the power of 2 and get x.
x-2^{2}\left(\sqrt{5}\right)^{2}
Expand \left(2\sqrt{5}\right)^{2}.
x-4\left(\sqrt{5}\right)^{2}
Calculate 2 to the power of 2 and get 4.
x-4\times 5
The square of \sqrt{5} is 5.
x-20
Multiply 4 and 5 to get 20.
\frac{\mathrm{d}}{\mathrm{d}x}(\left(\sqrt{x}\right)^{2}-\left(2\sqrt{5}\right)^{2})
Consider \left(\sqrt{x}+2\sqrt{5}\right)\left(\sqrt{x}-2\sqrt{5}\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
\frac{\mathrm{d}}{\mathrm{d}x}(x-\left(2\sqrt{5}\right)^{2})
Calculate \sqrt{x} to the power of 2 and get x.
\frac{\mathrm{d}}{\mathrm{d}x}(x-2^{2}\left(\sqrt{5}\right)^{2})
Expand \left(2\sqrt{5}\right)^{2}.
\frac{\mathrm{d}}{\mathrm{d}x}(x-4\left(\sqrt{5}\right)^{2})
Calculate 2 to the power of 2 and get 4.
\frac{\mathrm{d}}{\mathrm{d}x}(x-4\times 5)
The square of \sqrt{5} is 5.
\frac{\mathrm{d}}{\mathrm{d}x}(x-20)
Multiply 4 and 5 to get 20.
x^{1-1}
The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of ax^{n} is nax^{n-1}.
x^{0}
Subtract 1 from 1.
1
For any term t except 0, t^{0}=1.
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}