Operations with Polynomials

Adding Polynomials

1. (x3 + 5x + 3x2 +2) + (4x3 + 3x2+ 14)

a. 5x+ 9x+ 16
b. 4x3+6x2+x+14
c. 5x3+6x2+5x+16

 

2. (2x3+ 5x4 + 3x2 +12) + (7x3 + 4x2+ 3)

a. 7x3+5x2+15
b. 5x3+5x4+12+x2
c. 5x4+9x3+7x2+15

 

Subtracting Polynomials

3. (-4x2 – 5y2 – 8) – (2x2 + 3y2 + 8)

a. -4x2-5y2+8
b. -4x2-4y2-16
c. -6x2-8y2-16

 

4. (x2 + 4x) + (x2 + 8x) – (3x – 7)

a. 2x2+9x+7
b. X2-3x+7
c. 4x2-12x-7

 

5. Simplify (2x 2 + 3x)(5x – 7)

a. 10x3-14x2-21x
b. 10x3+x2-21x
c. 10x2+15x-21

 

6. Simplify (- 3x 3 +3)(- 4x 2 – 6)

a. -12x5+12x2-18
b. 12x5+18x3-12x2-18
c. 12x5+18x4-x2-18

 

Answer Key

 

  1. C
  2. C
  3. C
  4. A
  5. B
  6. B

Written by:
Modified: September 29th, 2017
Published: September 19th, 2016

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