Evaluate
2x+8+\frac{18}{x}
Factor
\frac{2\left(x^{2}+4x+9\right)}{x}
Graph
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\frac{\left(2x+8\right)x}{x}+\frac{18}{x}
To add or subtract expressions, expand them to make their denominators the same. Multiply 2x+8 times \frac{x}{x}.
\frac{\left(2x+8\right)x+18}{x}
Since \frac{\left(2x+8\right)x}{x} and \frac{18}{x} have the same denominator, add them by adding their numerators.
\frac{2x^{2}+8x+18}{x}
Do the multiplications in \left(2x+8\right)x+18.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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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