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5^x+1+5^2-x=126
We move all terms to the left:
5^x+1+5^2-x-(126)=0
determiningTheFunctionDomain 5^x-x+1-126+5^2=0
We add all the numbers together, and all the variables
-1x+5^x-100=0
We move all terms containing x to the left, all other terms to the right
-1x+5^x=100
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