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Adding & Subtracting Polynomials

Authored by Jennifer Wilson

Mathematics

9th Grade

CCSS covered

Used 11+ times

Adding & Subtracting Polynomials
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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Add these polynomials:

 (2x3+ 4)+(5x2 −7)\left(2x^3+\ 4\right)+\left(5x^{2\ }-7\right)  

 2x3+5x2−32x^3+5x^2-3  

 7x5 −37x^{5\ }-3  

 2x3 + 9x2 − 72x^3\ +\ 9x^2\ -\ 7  

 7x3 + 117x^{3\ }+\ 11  

Tags

CCSS.HSA.APR.A.1

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which is the correct way to rewrite this subtraction problem?

 (2x2 + 5x − 9) − (3x2− 4x + 6)\left(2x^{2\ }+\ 5x\ -\ 9\right)\ -\ \left(3x^2-\ 4x\ +\ 6\right)  

 (2x2 + 5x − 9) + (−3x2+ 4x − 6)\left(2x^{2\ }+\ 5x\ -\ 9\right)\ +\ \left(-3x^2+\ 4x\ -\ 6\right)  

 (2x2 + 5x − 9) − (−3x2+ 4x − 6)\left(2x^{2\ }+\ 5x\ -\ 9\right)\ -\ \left(-3x^2+\ 4x\ -\ 6\right)  

 (2x2 + 5x − 9) + (3x2− 4x + 6)\left(2x^{2\ }+\ 5x\ -\ 9\right)\ +\ \left(3x^2-\ 4x\ +\ 6\right)  

 (2x2 + 5x − 9) + (−3x2− 4x + 6)\left(2x^{2\ }+\ 5x\ -\ 9\right)\ +\ \left(-3x^2-\ 4x\ +\ 6\right)  

Tags

CCSS.HSA.APR.A.1

3.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

In the notes, we said that subtracting is the same as " ___ ___ ___."

(a)  

Tags

CCSS.7.EE.A.1

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of these are correct ways of combining like terms?

(Choose all that are true.)

4x − (−5x) = 9x4x\ -\ \left(-5x\right)\ =\ 9x

5x2+2x3= 7x55x^2+2x^3=\ 7x^5

6x2 + 2x2 = 8x26x^2\ +\ 2x^2\ =\ 8x^2

x + 2x2 = 3x2x\ +\ 2x^{2\ }=\ 3x^2

x + (−3x) = −2xx\ +\ \left(-3x\right)\ =\ -2x

Tags

CCSS.7.EE.A.1

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

What is the perimeter of this rectangle?

7x+47x+4

10x+810x+8

14x+814x+8

10x2+410x^2+4

Tags

CCSS.7.EE.A.1

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of these polynomials does NOT have a degree of 5?

 5x3 − 2x2 + 85x^{3\ }-\ 2x^2\ +\ 8  

 −2x5+x4−7x2 + 9-2x^5+x^4-7x^{2\ }+\ 9  

 4x2y34x^2y^3  

 −6x5+x-6x^5+x  

 xyz3xyz^3  

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Write this polynomial in standard form:

 2x−6x2+7−x32x-6x^2+7-x^3  

What is the leading coefficient?

2

-6

7

-1

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