Simplify x2−9x+3\dfrac{x^2 - 9}{x + 3}x+3x2−9 for x≠−3x \neq -3x=−3.
x−3x - 3x−3
x+3x + 3x+3
x2−3x^2 - 3x2−3
1x−3\dfrac{1}{x-3}x−31