AnswersAlgebra IIAddition and Subtraction of Polynomials

Addition and Subtraction of Polynomials — Quiz Answers

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What is the difference of the polynomials? open paren m squared n squared minus 7 close paren minus open paren m n plus 4 close paren

A
m squared n squared minus m n minus 3
B
m n plus 3
C
m n minus 11
D
m squared n squared minus m n minus 11
4

What is the missing term? (10⁢x−4⁢x^2)−(7⁢x+?)=3⁢x−6⁢x^2

A
negative 10 x squared
B
2 x squared
C
negative 2 x squared
D
negative x squared
6

What is the missing polynomial? ? minus open paren 20 minus 4 x minus 5 x squared close paren is equal to 20 minus 7 x squared

A
4 x minus 12 x squared
B
4 x minus 2 x squared
C
40 minus 4 x minus 12 x squared
D
40 minus 4 x minus 2 x squared
7

Which expression can be used to find the sum of the polynomials? open paren 9 minus 3 x squared close paren plus open paren negative 8 x squared plus 4 x plus 5 close paren

A
open bracket 3 x squared plus 8 x squared close bracket plus 4 x plus open bracket 9 plus negative 5 close bracket
B
open bracket open paren negative 3 x squared close paren plus open paren negative 8 x squared close paren close bracket plus 4 x plus open bracket 9 plus negative 5 close bracket
C
open bracket 3 x squared plus open paren negative 8 x squared close paren close bracket plus 4 x plus open bracket 9 plus 5 close bracket
D
open bracket open paren negative 3 x squared close paren plus open paren negative 8 x squared close paren close bracket plus 4 x plus open bracket 9 plus 5 close bracket
8

Lucia finds that open paren 3 x squared plus 3 x plus 5 close paren plus open paren 7 x squared minus 9 x plus 8 close paren is equal to 10 x squared minus 12 x plus 13 What error did Lucia make?

A
She combined the terms 3 x and negative 9 x incorrectly.
B
She did not combine all like terms.
C
She found the difference instead of the sum.
D
She combined the terms 3 x squared and 7 x squared incorrectly.
9

Marcus finds that open paren 3 x squared minus 2 y squared plus 5 x close paren plus open paren 4 x squared plus 12 y squared minus 7 x close paren is equal to 7 x squared minus 10 y squared minus 2 x What error did Marcus make?

A
He combined the terms negative 2 y squared and 12 y squared incorrectly.
B
He subtracted the polynomials instead of adding.
C
He combined the terms 3 x squared and 4 x squared incorrectly.
D
He combined the terms 5 x and negative 7 x incorrectly.
10

Which expression can be used to find the difference of the polynomials? open paren 4 m minus 5 close paren minus open paren 6 m minus 7 plus 2 n close paren

A
open paren 4 m minus 5 close paren plus open paren negative 6 m plus 7 plus 2 n close paren
B
open paren 4 m minus 5 close paren plus open paren negative 6 m plus 7 minus 2 n close paren
C
open paren 4 m minus 5 close paren plus open paren 6 m plus 7 plus 2 n close paren
D
open paren 4 m minus 5 close paren plus open paren negative 6 m minus 7 minus 2 n close paren

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Addition and Subtraction of Polynomials — Quiz…