Factor
\left(3-x\right)\left(a+b\right)
Evaluate
\left(3-x\right)\left(a+b\right)
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a\left(-x+3\right)+b\left(-x+3\right)
Do the grouping 3a-bx+3b-ax=\left(-ax+3a\right)+\left(-bx+3b\right), and factor out a in the first and b in the second group.
\left(-x+3\right)\left(a+b\right)
Factor out common term -x+3 by using distributive property.
Examples
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Matrix
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Simultaneous equation
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Limits
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