(x+1)(x-1)-x2=x+3

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Solution for (x+1)(x-1)-x2=x+3 equation: 



(x+1)(x-1)-x2=x+3

We move all terms to the left:

(x+1)(x-1)-x2-(x+3)=0

We add all the numbers together, and all the variables

-1x^2+(x+1)(x-1)-(x+3)=0

We use the square of the difference formula

-1x^2+x^2-(x+3)-1=0

We get rid of parentheses

-1x^2+x^2-x-3-1=0

We add all the numbers together, and all the variables

-1x-4=0

We move all terms containing x to the left, all other terms to the right

-x=4

x=4/-1

x=-4

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