AnswersS1S Algebra 1B E3440 - AGUnit Test

Unit Test — Unit test Answers

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Zohar is using scissors to cut a rectangle with a length of 5x – 2 and a width of 3x + 1 out of a larger piece of paper. Which expression can be used to find the perimeter of the rectangle and what is the perimeter if x = 4?

A
(5x−2)+(3x+1); 31 centimeters
B
(5x−2)+(3x+1); 36 centimeters
C
2(5x−2)+2(3x+1); 62 centimeters
D
2(5x−2)+2(3x+1); 70 centimeters
22
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What is the sum of the polynomials?(7x3 – 4x2) + (2x3 – 4x2)

A
5x3
B
9x3
C
5x3 – 8x2
D
9x3 – 8x2
23

Adi used algebra tiles to represent the product .

Question illustration
A
She used the algebra tiles correctly.
B
She did not represent the two original factors correctly on the headers.
C
The signs on some of the products are incorrect.
D
Some of the products do not show the correct powers of x.
24

The polynomial 2x3 − 5x2 + 4x − 10 is split into two groups, 2x3 + 4x and −5x2 − 10. The GCFs of each group is then factored out. What is the common binomial factor between the two groups after their GCFs have been factored out?

A
2x + 5
B
2x − 5
C
x2 − 2
D
x2 + 2
25

Which algebraic expression is a polynomial with a degree of 4?

A
5x4 +
Option A
B
x5 – 6x4 + 14x3 + x2
C
9x4 – x3 –
Option C
D
2x4 – 6x4 +
Option D

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