X(x+2)=x2+2x=x+1-1=15

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Solution for X(x+2)=x2+2x=x+1-1=15 equation: 



X(X+2)=X2+2X=X+1-1=15

We move all terms to the left:

X(X+2)-(X2+2X)=0

We add all the numbers together, and all the variables

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

We multiply parentheses

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

We get rid of parentheses

-X^2+X^2-2X+2X=0

We add all the numbers together, and all the variables

=0

X=0/1

X=0

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