Evaluate
\left(10-x\right)\left(x-550\right)
Expand
-x^{2}+560x-5500
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580x-5500-20x-x^{2}
To find the opposite of 5500+20x+x^{2}, find the opposite of each term.
560x-5500-x^{2}
Combine 580x and -20x to get 560x.
580x-5500-20x-x^{2}
To find the opposite of 5500+20x+x^{2}, find the opposite of each term.
560x-5500-x^{2}
Combine 580x and -20x to get 560x.
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