Polynomial Expressions and Area Calculations

Polynomial Expressions and Area Calculations

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Amelia Wright

FREE Resource

The video tutorial explains how to determine the area of a rectangular swimming pool using polynomial expressions. The length and width of the pool are represented by the expressions 3x + 5 and 5x - 2, respectively. The tutorial demonstrates how to calculate the area by multiplying these expressions and then simplifying the resulting polynomial using the distributive property. The final expression for the area is 15x^2 + 19x - 10.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What expressions does Zob use to represent the length and width of the pool?

3x + 5 for length and 5x - 2 for width

5x - 2 for length and 3x + 5 for width

3x - 5 for length and 5x + 2 for width

5x + 3 for length and 2x - 5 for width

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for the area of a rectangle?

2 * (Length + Width)

Length * Width

Length - Width

Length + Width

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which property is used to multiply the polynomial expressions for length and width?

Associative Property

Commutative Property

Distributive Property

Identity Property

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of multiplying 3x by 5x?

8x

15x^2

8x^2

15x

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the simplified expression for the area of the pool?

19x^2 + 15x - 10

15x^2 + 19x - 10

19x^2 + 25x - 6

15x^2 + 25x - 6

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which terms are combined to simplify the expression for the area?

15x^2 and 19x

-6x and 25x

19x and -10

15x^2 and -10

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the coefficient of the x term in the final expression for the area?

15

19

25

10

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