X^2=x^2+9x

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Solution for X^2=x^2+9x equation: 



X^2=X^2+9X

We move all terms to the left:

X^2-(X^2+9X)=0

We get rid of parentheses

X^2-X^2-9X=0

We add all the numbers together, and all the variables

-9X=0

X=0/-9

X=0

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