Evaluate
4x+\frac{25}{x}
Factor
\frac{4x^{2}+25}{x}
Graph
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\frac{4xx}{x}+\frac{25}{x}
To add or subtract expressions, expand them to make their denominators the same. Multiply 4x times \frac{x}{x}.
\frac{4xx+25}{x}
Since \frac{4xx}{x} and \frac{25}{x} have the same denominator, add them by adding their numerators.
\frac{4x^{2}+25}{x}
Do the multiplications in 4xx+25.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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Matrix
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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
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Limits
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