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18.74^2*10.54^2=x
We move all terms to the left:
18.74^2*10.54^2-(x)=0
We add all the numbers together, and all the variables
-1x+39013.99238416=0
We move all terms containing x to the left, all other terms to the right
-x=-39013.99238416
x=-39013.99238416/-1
x=39013+0.99238416000298/1
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