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Rearrange the equation to make x the subject

Y=x2-2x-3
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1 Answer

You have to solve for x.
 
 
Add 3 to both sides of the equation.
 
Y + 3 = x2 - 2x
 
 
Add 1 to both sides of the equation.
 
Y + 4 = x2 - 2x + 1
 
Y + 4 = (x - 1)2
 
 
Square-root both sides of the equation.
 
±√(Y + 4) = x - 1
 
 
Add 1 to both sides of the equation..
 
1 ± √(Y + 4) = x