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(P)=5^2+6P+3
We move all terms to the left:
(P)-(5^2+6P+3)=0
We get rid of parentheses
P-6P-3-5^2=0
We add all the numbers together, and all the variables
-5P-28=0
We move all terms containing P to the left, all other terms to the right
-5P=28
P=28/-5
P=-5+3/5
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