Question

Subtract these polynomials.

(3x2 + 3x + 3) - (x2 + 2x + 3) =

A. 2x2 + x
B. 2x2 + 5x
C. 2x2 + 5x + 6
D. 2x2 + x + 6

Answer 1

3x^2 -x^2= 2x^2
3x-2x=x
3-3=0

The answer is A.

Answer 2

`2x^2+1x`

Explanation:

Subtract these polynomials.

`(3x^2 + 3x + 3) - (x^2 + 2x + 3)`

To subtract, we multiply negative sign inside the second parenthesis

`3x^2 + 3x + 3-x^2 - 2x - 3`

To subtract the polynomials we combine like terms

`3x^2-x^2+ 3x- 2x+3-3`

`2x^2+1x`