X^2(x^2-9)=4(x^2-9)

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Solution for X^2(x^2-9)=4(x^2-9) equation:



X^2(X^2-9)=4(X^2-9)
We move all terms to the left:
X^2(X^2-9)-(4(X^2-9))=0
We calculate terms in parentheses: -(4(X^2-9)), so:
4(X^2-9)
We multiply parentheses
4X^2-36
Back to the equation:
-(4X^2-36)
We get rid of parentheses
X^2(X^2-9)-4X^2+36=0
We add all the numbers together, and all the variables
-4X^2+X^2(X^2-9)+36=0
We move all terms containing X to the left, all other terms to the right
-4X^2+X^2(X^2-9)=-36

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