Me


2.simplify (3x − 5) + (3x + 6).

6x − 1
1
6x − 11
6x + 1

question 3(multiple choice worth 2 points)

which of the following shows that polynomials are closed under addition when two polynomials 4x2 − 8x − 7 and −5x + 16 are added?

4x2 − 13x + 9 may or may not be a polynomial.
4x2 + 13x − 23 may or may not be a polynomial.
4x2 − 13x + 9 will be a polynomial.
4x2 + 13x − 23 will be a polynomial.

question 4(multiple choice worth 2 points)

ricardo and kim rowed their canoes from their base camp to a fishing camp. they rowed a distance of x miles upstream on one river, (3x2 − 9) miles downstream on another river, and (2x + 9) miles across a calm lake. which expression is equivalent to the total distance, in miles, ricardo and kim rowed their canoes?

5x2
6x2
3x2 + 2x
3x2 + 3x

question 5(multiple choice worth 2 points)

simplify (3x2 − 2) + (2x2 − 6x + 3).

5x2 − 6x + 1
5x2 − 6x − 1
x2− 6x + 1
5x2 − 8x + 3