Factor
\left(p+q\right)\left(r+s\right)
Evaluate
\left(p+q\right)\left(r+s\right)
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p\left(r+s\right)+q\left(r+s\right)
Do the grouping pr+ps+qr+qs=\left(pr+ps\right)+\left(qr+qs\right), and factor out p in the first and q in the second group.
\left(r+s\right)\left(p+q\right)
Factor out common term r+s by using distributive property.
Examples
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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Limits
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