(x+1)(x-1)+2x=x2-5

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Solution for (x+1)(x-1)+2x=x2-5 equation: 



(x+1)(x-1)+2x=x2-5

We move all terms to the left:

(x+1)(x-1)+2x-(x2-5)=0

We add all the numbers together, and all the variables

-(+x^2-5)+(x+1)(x-1)+2x=0

We add all the numbers together, and all the variables

-(+x^2-5)+2x+(x+1)(x-1)=0

We use the square of the difference formula

-(+x^2-5)+x^2+2x-1=0

We get rid of parentheses

-x^2+x^2+2x+5-1=0

We add all the numbers together, and all the variables

2x+4=0

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

2x=-4

x=-4/2

x=-2

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