Factor
\left(3r-2m\right)\left(2m+3r\right)
Evaluate
9r^{2}-4m^{2}
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\left(3r-2m\right)\left(3r+2m\right)
Rewrite 9r^{2}-4m^{2} as \left(3r\right)^{2}-\left(2m\right)^{2}. The difference of squares can be factored using the rule: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).
\left(-2m+3r\right)\left(2m+3r\right)
Reorder the terms.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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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