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=650-5-^2.Q=10
We move all terms to the left:
-(650-5-^2.Q)=0
We get rid of parentheses
^2.Q-650+5=0
We add all the numbers together, and all the variables
^2.Q-645=0
We move all terms containing Q to the left, all other terms to the right
^2.Q=645
Q=645/1
Q=645
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