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500=0.1^2+2.4x+25
We move all terms to the left:
500-(0.1^2+2.4x+25)=0
We get rid of parentheses
-2.4x-25+500-0.1^2=0
We add all the numbers together, and all the variables
-2.4x+474.99=0
We move all terms containing x to the left, all other terms to the right
-2.4x=-474.99
x=-474.99/-2.4
x=197+1/1.0958904109589
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