(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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