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Lesson Example Discussion Quiz: Class Homework

Quiz Discussion

Title: Expand the expression by using algebric identities

Grade: 9-a Lesson: S3-L3

Explanation: Let us discuss a few questions on this topic and review the answers to every question.

Quiz: Discussion in Class

Problem Id Problem Options

Steps 1

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

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

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

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

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

Steps 2

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

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

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

C) \$ 4x^2 - 1/(4x^2) - 2 \$

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

Steps 3

Expand the expression:
\$ (4x + 1/(4x))^3 \$

A) \$ 64x^3 + 1/(64x^3) - 3/(4x) - 12x \$

B) \$ 16x^2 + 1/(16x^2) + 3/(4x) + 12x \$

C) \$ 64x^3 + 1/(64x^3) + 3/(4x) + 12x \$

D) \$ 64x^3 + 1/(64x^3) + 3/(16x) + 48x \$

Steps 4

Expand the expression:
\$ (6x + 1/(6x))^2 \$

A) \$ 6x + 1/(6x) + 2 \$

B) \$ 36x^2 + 1/(36x^2) + 2 \$

C) \$ 36x^2 - 1/(36x^2) - 2 \$

D) \$ 6x - 1/(6x) - 2 \$

Steps 5

Expand the expression:
\$(5x - 1/(5x))^3 \$

A) \$ 125x^3 + 1/(125x^3) + 3/(5x) - 15x \$

B) \$ 125x^3 + 1/(125x^3) - 3/(5x) - 15x \$

C) \$ 125x^3 - 1/(125x^3) + 3/(5x) - 15x \$

D) \$ 25x^2 + 1/(25x^2) + 3/(25x) - 25x \$

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