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\frac{\left(x+1\right)\left(x+4\right)}{\left(x+4\right)\left(x+1\right)}
Multiply \frac{x+1}{x+4} times \frac{x+4}{x+1} by multiplying numerator times numerator and denominator times denominator.
1
Cancel out \left(x+1\right)\left(x+4\right) in both numerator and denominator.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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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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