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(A)=-2(0)^2+300A
We move all terms to the left:
(A)-(-2(0)^2+300A)=0
We get rid of parentheses
A-300A+20^2=0
We add all the numbers together, and all the variables
-299A+400=0
We move all terms containing A to the left, all other terms to the right
-299A=-400
A=-400/-299
A=1+101/299
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