(X+3)^2=x^2-3(1-x)

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Solution for (X+3)^2=x^2-3(1-x) equation: 



(X+3)^2=X^2-3(1-X)

We move all terms to the left:

(X+3)^2-(X^2-3(1-X))=0

We add all the numbers together, and all the variables

(X+3)^2-(X^2-3(-1X+1))=0



We calculate terms in parentheses: -(X^2-3(-1X+1)), so:

X^2-3(-1X+1)

We multiply parentheses

X^2+3X-3

Back to the equation:

-(X^2+3X-3)



We get rid of parentheses

-X^2+(X+3)^2-3X+3=0

We add all the numbers together, and all the variables

-1X^2-3X+(X+3)^2+3=0

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

-1X^2-3X+(X+3)^2=-3

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