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(X+2)(X-2)-(X-3)*2=-1
We move all terms to the left:
(X+2)(X-2)-(X-3)*2-(-1)=0
We add all the numbers together, and all the variables
(X+2)(X-2)-(X-3)*2+1=0
We use the square of the difference formula
X^2-(X-3)*2-4+1=0
We multiply parentheses
X^2-2X+6-4+1=0
We add all the numbers together, and all the variables
X^2-2X+3=0
a = 1; b = -2; c = +3;
Δ = b2-4ac
Δ = -22-4·1·3
Δ = -8
Delta is less than zero, so there is no solution for the equation
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