Understanding Integer Properties and Differences of Squares

Understanding Integer Properties and Differences of Squares

Assessment

Interactive Video

Mathematics

7th - 10th Grade

Hard

Created by

Liam Anderson

FREE Resource

The video tutorial explores a mathematical problem involving two integers, p and n, where p is greater than n and both are positive. The equation p^2 - n^2 = 12 is given, and the task is to determine possible values for p-n. The solution involves factoring the equation as a difference of squares, leading to the expression (p+n)(p-n) = 12. Various combinations of positive integers that multiply to 12 are considered, and scenarios are evaluated to find integer solutions. The conclusion is that the only possible value for p-n is 2.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between p and n in the given problem?

p is greater than n

p and n are not related

p is equal to n

p is less than n

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What equation is given in the problem involving p and n?

p^2 + n^2 = 12

p + n = 12

p^2 - n^2 = 12

p - n = 12

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can the expression p^2 - n^2 be factored?

(p - n)(p - n)

(p + n)(p - n)

(p + n)(p + n)

(p^2 - n^2)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the possible integer combinations for p + n and p - n that multiply to 12?

8 and 4, 6 and 3, 5 and 2

7 and 5, 6 and 1, 4 and 2

10 and 2, 5 and 2, 3 and 4

12 and 1, 6 and 2, 4 and 3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the scenario where p + n = 12 and p - n = 1 not possible?

n becomes a non-integer

n becomes a negative integer

p becomes a non-integer

p becomes a negative integer

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the scenario where p + n = 6 and p - n = 2, what is the value of p?

2

3

4

5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of n in the scenario where p + n = 6 and p - n = 2?

3

4

2

1

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