(X+2)(x+1)=x(x+4)

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Solution for (X+2)(x+1)=x(x+4) equation: 



(X+2)(X+1)=X(X+4)

We move all terms to the left:

(X+2)(X+1)-(X(X+4))=0

We multiply parentheses ..

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

We add all the numbers together, and all the variables

-1X+2=0

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

-X=-2

X=-2/-1

X=+2

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