Quiz In Class

Title: Expand the expression by using algebric identities

Grade: 9-a Lesson: S3-L3

Explanation: Hello Students, time to practice and review. Let us take next 10-15 minutes to solve the five problems using the Quiz Sheet. Then submit the quiz to get the score. This is a good exercise to check your understanding of the concepts.

Quiz: in Class

Problem Id Problem Options

1

Expand the expression:
\$ (4x + 1/(4x))^2 \$

A) \$ 4x + 1/(4x) + 2 \$

B) \$ 16x^2 + 1/(16x^2) + 2 \$

C) \$ 16x^2 - 1/(16x^2) - 2 \$

D) \$ 4x + 1/(4x) - 2 \$

2

Expand the expression:
\$ (2x + 1/(3x))^2 \$

A) \$ 4x^2 + 1/(9x^2) - 4/3 \$

B) \$ 4x^2 - 1/(9x^2) + 4/3 \$

C) \$ 4x^2 + 1/(9x^2) + 4/3 \$

D) \$ 4x^2 - 1/(9x^2) - 4/3 \$

3

Expand the expression:
\$ (3x - 1/(9x))^2 \$

A) \$ 9x^2 - 1/(81x^2) - 2/3 \$

B) \$ 9x^2 + 1/(9x^2) - 2/9 \$

C) \$ 9x^2 - 1/(81x^2) + 2/3 \$

D) \$ 9x^2 + 1/(81x^2) - 2/3 \$

4

Expand the expression:
\$ (x + 1/x)^3 \$

A) \$ x^3 + 1/(x^3) + 3x + 3/x \$

B) \$ x^3 + 1/(x^3) - 3x - 3/x \$

C) \$ x^3 - 1/(x^3) + 3x - 3/x \$

D) \$ x^3 - 1/(x^3) + 3x + 3/x \$

5

Expand the expression:
\$ (2x - 1/(2x))^3 \$

A) \$ 8x^3 - 1/(8x^3) - 3/(2x) - 6x \$

B) \$ 8x^3 + 1/(8x^3) + 3/(2x) - 6x \$

C) \$ 8x^3 - 1/(8x^3) + 3/(2x) - 6x \$

D) \$ 8x^3 - 1/(8x^3) - 3/(2x) + 6x \$


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