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(X-1)(X+5)=X2+5X-2
We move all terms to the left:
(X-1)(X+5)-(X2+5X-2)=0
We add all the numbers together, and all the variables
-(+X^2+5X-2)+(X-1)(X+5)=0
We get rid of parentheses
-X^2-5X+(X-1)(X+5)+2=0
We multiply parentheses ..
-X^2+(+X^2+5X-1X-5)-5X+2=0
We add all the numbers together, and all the variables
-1X^2+(+X^2+5X-1X-5)-5X+2=0
We get rid of parentheses
-1X^2+X^2+5X-1X-5X-5+2=0
We add all the numbers together, and all the variables
-1X-3=0
We move all terms containing X to the left, all other terms to the right
-X=3
X=3/-1
X=-3
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