X^2-1=(x+1)(x-1

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Solution for X^2-1=(x+1)(x-1 equation: 



X^2-1=(X+1)(X-1

We move all terms to the left:

X^2-1-((X+1)(X-1)=0

We use the square of the difference formula

X^2+X^2+1=0

We add all the numbers together, and all the variables

2X^2+1=0

a = 2; b = 0; c = +1;
Δ = b2-4ac
Δ = 02-4·2·1
Δ = -8
Delta is less than zero, so there is no solution for the equation

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