(X+3)(x-3)-x(x-5)=6

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Solution for (X+3)(x-3)-x(x-5)=6 equation: 



(X+3)(X-3)-X(X-5)=6

We move all terms to the left:

(X+3)(X-3)-X(X-5)-(6)=0

We use the square of the difference formula

X^2-X(X-5)-9-6=0

We multiply parentheses

X^2-X^2+5X-9-6=0

We add all the numbers together, and all the variables

5X-15=0

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

5X=15

X=15/5

X=3

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