Evaluate
2b-\frac{7}{5}+\frac{4}{b}
Expand
2b-\frac{7}{5}+\frac{4}{b}
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\frac{b^{2}\left(-10b^{2}+7b-20\right)}{-5b^{3}}
Factor the expressions that are not already factored.
\frac{-10b^{2}+7b-20}{-5b}
Cancel out b^{2} in both numerator and denominator.
\frac{b^{2}\left(-10b^{2}+7b-20\right)}{-5b^{3}}
Factor the expressions that are not already factored.
\frac{-10b^{2}+7b-20}{-5b}
Cancel out b^{2} in both numerator and denominator.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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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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