Which property of polynomial subtraction says that the difference of two polynomials is always a polynomials

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)

The equation y= -16t^2+120 can be used to represent the fridge height above the ground where ti represents time in seconds after she threw the apple how long does it take the apple to hit the ground running your