Expand
-x^{2}+50x-400
Evaluate
\left(40-x\right)\left(x-10\right)
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40x-400-x^{2}+10x
Apply the distributive property by multiplying each term of 40-x by each term of x-10.
50x-400-x^{2}
Combine 40x and 10x to get 50x.
40x-400-x^{2}+10x
Apply the distributive property by multiplying each term of 40-x by each term of x-10.
50x-400-x^{2}
Combine 40x and 10x to get 50x.
Examples
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