Polynomial Expressions — Test

Question 1

What is the sum of the polynomials? open paren 6 x plus 7 plus x squared close paren plus open paren 2 x squared minus 3 close paren

Revolt · Accepted Answer

3 x squared plus 6 x plus 4

Question 2

What is the product? open paren negative 6 A cubed b plus 2 A b squared close paren times open paren 5 A squared minus 2 A b squared minus b close paren

Revolt · Accepted Answer

negative 30 A to the 6th power b plus 12 A cubed b squared plus 6 A cubed b plus 10 A squared b squared minus 4 A b to the 4th power minus 2 A b squared

Question 3

Which statement best describes the polynomial? negative 24 x to the 7th power minus 12 x squared minus 9 x plus 6

Revolt · Accepted Answer

It is in standard form because the exponents are in order from highest to lowest.

Question 4

Vanessa uses the expressions open paren 3 x squared plus 5 x plus 10 close paren and open paren x squared minus 3 x minus 1 close paren to represent the length and width of her patio. Which expression represents the area l w of Vanessa’s patio?

Revolt · Accepted Answer

3 x to the 4th power minus 4 x cubed plus 22 x squared plus 35 x plus 10

Question 5

What is the difference of the polynomials? open paren x to the 4th power plus x cubed plus x squared plus x close paren minus open paren x to the 4th power minus x cubed plus x squared minus x close paren

Revolt · Accepted Answer

2 x cubed plus 2 x

Polynomial Expressions — Test Answers

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