(x+2)(x-2)=x(x+4)

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Solution for (x+2)(x-2)=x(x+4) equation: 



(x+2)(x-2)=x(x+4)

We move all terms to the left:

(x+2)(x-2)-(x(x+4))=0

We use the square of the difference formula

x^2-(x(x+4))-4=0



We calculate terms in parentheses: -(x(x+4)), so:

x(x+4)

We multiply parentheses

x^2+4x

Back to the equation:

-(x^2+4x)



We get rid of parentheses

x^2-x^2-4x-4=0

We add all the numbers together, and all the variables

-4x-4=0

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

-4x=4

x=4/-4

x=-1

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