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X(X-1)=X2-2(X-2)
We move all terms to the left:
X(X-1)-(X2-2(X-2))=0
We multiply parentheses
X^2-1X-(X2-2(X-2))=0
We calculate terms in parentheses: -(X2-2(X-2)), so:We get rid of parentheses
X2-2(X-2)
We add all the numbers together, and all the variables
X^2-2(X-2)
We multiply parentheses
X^2-2X+4
Back to the equation:
-(X^2-2X+4)
X^2-X^2-1X+2X-4=0
We add all the numbers together, and all the variables
X-4=0
We move all terms containing X to the left, all other terms to the right
X=4
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