Evaluate
3x+\frac{1200}{x}
Factor
\frac{3\left(x^{2}+400\right)}{x}
Graph
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\frac{1200}{x}+\frac{3xx}{x}
To add or subtract expressions, expand them to make their denominators the same. Multiply 3x times \frac{x}{x}.
\frac{1200+3xx}{x}
Since \frac{1200}{x} and \frac{3xx}{x} have the same denominator, add them by adding their numerators.
\frac{1200+3x^{2}}{x}
Do the multiplications in 1200+3xx.
Examples
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Matrix
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Simultaneous equation
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Integration
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Limits
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