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1400^2=x(2x)
We move all terms to the left:
1400^2-(x(2x))=0
determiningTheFunctionDomain -x2x+1400^2=0
We add all the numbers together, and all the variables
-x2x+1960000=0
We move all terms containing x to the left, all other terms to the right
-x2x=-1960000
x=-1960000/1
x=-1960000
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