Evaluate
\left(9-x\right)\left(x+2\right)
Expand
18+7x-x^{2}
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9x-x^{2}+18-2x
Apply the distributive property by multiplying each term of x+2 by each term of 9-x.
7x-x^{2}+18
Combine 9x and -2x to get 7x.
9x-x^{2}+18-2x
Apply the distributive property by multiplying each term of x+2 by each term of 9-x.
7x-x^{2}+18
Combine 9x and -2x to get 7x.
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Limits
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