Practice problem
Simplify: x2−9x+3\frac{x^{2}-9}{x+3}x+3x2−9
x+3x+3x+3
x−3x-3x−3
x2+3x^{2}+3x2+3
x2−3x^{2}-3x2−3
Type a concept, like “slope” or “photosynthesis”.