Factor
c\left(15-y\right)\left(x-2\right)
Evaluate
c\left(15-y\right)\left(x-2\right)
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c\left(15x+2y-xy-30\right)
Factor out c.
x\left(-y+15\right)-2\left(-y+15\right)
Consider 15x+2y-xy-30. Do the grouping 15x+2y-xy-30=\left(-xy+15x\right)+\left(2y-30\right), and factor out x in the first and -2 in the second group.
\left(-y+15\right)\left(x-2\right)
Factor out common term -y+15 by using distributive property.
c\left(x-2\right)\left(-y+15\right)
Rewrite the complete factored expression.
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