Quiz Discussion

Title: Simplify the expression

Grade: 8-a Lesson: S1-L7

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
\$ (3a+5b+5/c^2) + (-2a+7b-1/c^2) \$

A) \$ 7a + 12b + 4c^2 \$

B) \$ 8a + 2b + 4c \$

C) \$2a + 2b + c^2 \$

D) \$ a + 12b + 4/c^2 \$

Steps 2

Simplify the expression
\$ (1/a^2+5b-1/c^2) - (-2/a^2+b-1/c^2) \$

A) \$ 3/a^2 + 4b \$

B) \$ 3/a^2 + 6b + 2/c^2 \$

C) \$ - 3/a^2 - 4b \$

D) \$ 3/a^2 - 4b \$

Steps 3

Simplify the expression
\$ (2/a-5/b^2-8/c^2) + (3/a+3/b^2+5/c^2) \$

A) \$ 5/a - 2/b^2 + 3/c^2 \$

B) \$ 5/a + 2/b^2 - 3/c^2 \$

C) \$ 5/a - 2/b^2 - 3/c^2 \$

D) \$ - 5/a - 2/b^2 + 3/c^2 \$

Steps 4

Simplify the expression
\$ (3/a^2+7/b^2+6/c^2) - (-1/a^2+3/b^2+4/c^2) \$

A) \$ 4/a^2 - 4/b^2 + 2/c^2 \$

B) \$ 4/a^2 - 4/b^2 - 2/c^2 \$

C) \$ 4/a^2 + 4/b^2 + 2/c^2 \$

D) \$ - 4/a^2 + 2/b^2 + 4/c^2 \$

Steps 5

Simplify the expression
\$ (4/a^2+5b+c^2) - (-2/a^2+4b-2c^2) \$

A) \$ 6a^2 + b + 3c^2 \$

B) \$ - 6/a^2 + 9b + 3c^2 \$

C) \$ - 6/a^2 + 9b - c^2 \$

D) \$ 6/a^2 + b + 3c^2 \$


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