Evaluate
-x+20-\frac{64}{x}
Factor
-\frac{\left(x-16\right)\left(x-4\right)}{x}
Graph
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\frac{\left(-x+20\right)x}{x}-\frac{64}{x}
To add or subtract expressions, expand them to make their denominators the same. Multiply -x+20 times \frac{x}{x}.
\frac{\left(-x+20\right)x-64}{x}
Since \frac{\left(-x+20\right)x}{x} and \frac{64}{x} have the same denominator, subtract them by subtracting their numerators.
\frac{-x^{2}+20x-64}{x}
Do the multiplications in \left(-x+20\right)x-64.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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