Quiz Discussion

Title: Simplify the expression by using algebric identities

Grade: 9-a Lesson: S3-L2

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

Simplify the expression:
\$ (3+2x^2) - (4x^2+5+6x^5) - (6-7x-3x^5) \$

A) \$ -3x^5 - 2x^2 + 7x - 8 \$

B) \$ -3x^5 + 2x^2 + 7x - 8 \$

C) \$ -3x^5 - 2x^2 - 7x - 8 \$

D) \$ 3x^5 - 2x^2 + 7x - 8 \$

Steps 2

Simplify the expression:
\$ x^2 + 4y^2 + 9z^2 + 4xy + 12yz + 6zx \$

A) \$ ( x + 2y + 3z )^2 \$

B) \$ ( x + 2y + 6z )^2 \$

C) \$ ( 3x + 4y + 6z )^2 \$

D) \$ ( 2x + 2y + 3z )^2 \$

Steps 3

Simplify the expression:
\$ (4a^2 + 4a + 1)(4a^2 - 4a + 1) \$

A) \$ 18a^4 - 6a^2 + 1 \$

B) \$ 16a^4 - 8a^2 + 1 \$

C) \$ 16a^4 - 8a^2 + 3 \$

D) \$ 16a^4 - 6a^2 + 1 \$

Steps 4

Simplify the expression:
\$ (5+4x) + (4x^2-13+9x) + (16-17x-3x^2) \$

A) \$ x^2 - 2x + 8 \$

B) \$ x^2 - 4x + 6 \$

C) \$ x^2 - 4x + 8 \$

D) \$ 2x^2 - 2x + 6 \$

Steps 5

Simplify the expression:
\$ (x+2y+3z)^2 \$

A) \$ x^2 + 4y^2 + 9z^2 + 4xy + 12yz + 9zx \$

B) \$ x^2 + 4y^2 + 9z^2 + 4xy + 6yz + 12zx \$

C) \$ x^2 + 4y^2 + 9z^2 + 6xy + 12yz + 4zx \$

D) \$ x^2 + 4y^2 + 9z^2 + 4xy + 12yz + 6zx \$


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