Factors, Quadratics, and Consecutive Numbers

Factors, Quadratics, and Consecutive Numbers

Assessment

Interactive Video

Mathematics

6th - 8th Grade

Hard

Created by

Lucas Foster

FREE Resource

The video tutorial explains how to find two consecutive page numbers whose product is 342. It begins by setting up a quadratic equation, x(x + 1) = 342, and simplifies it to x^2 + x - 342 = 0. The tutorial then demonstrates factoring the equation by finding the prime factorization of 342, which is 2 * 3 * 3 * 19, leading to the factors 18 and 19. The solutions to the equation are x = 18 and x = -19, but since a page number cannot be negative, the consecutive page numbers are 18 and 19.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the product of the two consecutive page numbers we are trying to find?

340

341

342

343

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the first page number is X, what expression represents the next consecutive page number?

X+2

X+1

X-1

X

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the quadratic equation derived from the problem statement?

x^2 + x - 342 = 0

x^2 - x - 342 = 0

x^2 + x + 342 = 0

x^2 - x + 342 = 0

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving the quadratic equation by factoring?

Dividing both sides by x

Multiplying both sides by 2

Subtracting 342 from both sides

Adding 342 to both sides

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which number is NOT a factor of 342?

19

2

3

5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the prime factorization of 342?

2 * 3 * 3 * 19

3 * 3 * 3 * 19

2 * 3 * 5 * 19

2 * 2 * 3 * 19

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two binomial factors of the quadratic equation?

(x + 19)(x - 18)

(x + 17)(x - 20)

(x + 18)(x - 19)

(x + 20)(x - 17)

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