(X,y)=(2,-3)

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Solution for (X,y)=(2,-3) equation: 



(X.X)=(2.-3)

We move all terms to the left:

(X.X)-((2.-3))=0

We add all the numbers together, and all the variables

(+X.X)-((-1))=0

We add all the numbers together, and all the variables

(+X.X)+1=0

We get rid of parentheses

X.X+1=0

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

X.X=-1

X=-1/1

X=-1

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