(2x2- 10x2+ 6x -3x2 + 15x -9) simplified to (-12x2+21x-9)
Step-by-step explanation:
I could explain but you would just be confused because I did it in my head and I don't do it the way they teach us to if you want to make sure my answer is right you should be able to simplify my simplified version back into the original problem
