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-1=a(0+3)^2+2
We move all terms to the left:
-1-(a(0+3)^2+2)=0
We add all the numbers together, and all the variables
-(a3^2+2)-1=0
We get rid of parentheses
-a3^2-2-1=0
We add all the numbers together, and all the variables
-a3^2-3=0
We move all terms containing a to the left, all other terms to the right
-a3^2=3
a=3/1
a=3
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