Which operation shows that polynomials are a closed system under subtraction?
Responses
(2x2+6x+1)−(3x2+3x+9)=−x2+3x−8
(2x2+6x+1)−(3x2+3x+9)=2x2+6x+1−3x2−3x−9
(2x2+6x+1)−(3x2+3x+9)=(2x2+6x−4)−(3x2+3x+4)
(2x2+6x+1)−(3x2+3x+9)=5x2+9x+10
The correct response is: (2x2+6x+1)−(3x2+3x+9)=−x2+3x−8
The correct response is:
(2x^2 + 6x + 1) - (3x^2 + 3x + 9) = -x^2 + 3x - 8
This shows that polynomials are a closed system under subtraction.