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0=x^2x-6+8.4
We move all terms to the left:
0-(x^2x-6+8.4)=0
We add all the numbers together, and all the variables
-(x^2x-6+8.4)=0
We get rid of parentheses
-x^2x+6-8.4=0
We add all the numbers together, and all the variables
-x^2x-2.4=0
We move all terms containing x to the left, all other terms to the right
-x^2x=2.4
x=2.4/1
x=2.4
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