Evaluate
15-\frac{4860}{x^{2}}
Factor
\frac{15\left(x-18\right)\left(x+18\right)}{x^{2}}
Graph
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\frac{15x^{2}}{x^{2}}-\frac{4860}{x^{2}}
To add or subtract expressions, expand them to make their denominators the same. Multiply 15 times \frac{x^{2}}{x^{2}}.
\frac{15x^{2}-4860}{x^{2}}
Since \frac{15x^{2}}{x^{2}} and \frac{4860}{x^{2}} have the same denominator, subtract them by subtracting their numerators.
Examples
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Matrix
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Limits
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