X(x)=(x+3)(x-3)+9

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Solution for X(x)=(x+3)(x-3)+9 equation: 



X(X)=(X+3)(X-3)+9

We move all terms to the left:

X(X)-((X+3)(X-3)+9)=0

We use the square of the difference formula

X^2+XX+9=0

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

X^2+XX=-9

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