X(x-4)=x2+5x+7

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Solution for X(x-4)=x2+5x+7 equation: 



X(X-4)=X2+5X+7

We move all terms to the left:

X(X-4)-(X2+5X+7)=0

We add all the numbers together, and all the variables

-(+X^2+5X+7)+X(X-4)=0

We multiply parentheses

-(+X^2+5X+7)+X^2-4X=0

We get rid of parentheses

-X^2+X^2-5X-4X-7=0

We add all the numbers together, and all the variables

-9X-7=0

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

-9X=7

X=7/-9

X=-7/9

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