• A. $3\sqrt{2}$
• B. $18\sqrt{3}$
• C. $12\sqrt{3}$
• D. 8

Answer: Option B

Explanation:

• A. $\frac{1}{2\sqrt{2}}$
• B. $2\sqrt{2}$
• C. $\frac{1}{2\sqrt{3}}$
• D. $2\sqrt{3}$

Answer: Option A

Explanation:

• A. $\frac{1}{2\sqrt{2}}$
• B. $2\sqrt{2}$
• C. $\frac{1}{2\sqrt{3}}$
• D. $2\sqrt{3}$

Answer: Option A

Explanation:

• A. 72
• B. 73
• C. 74
• D. 75

Answer: Option B

Explanation:

• A. 2
• B. 4
• C. 7
• D. 1

Answer: Option A

Explanation:

• A. +2
• B. +1
• C. -1

Answer: Option B

Explanation:

• A. $5:11$
• B. $6:5$
• C. $5:6$
• D. $3:8$

Answer: Option A

Explanation:

• A. $y:x$
• B. $y:\frac{1}{x}$
• C. $\sqrt{x}:\sqrt{y}$
• D. $\frac{1}{x}:\frac{1}{y}$

Answer: Option A

Explanation:

• A. $0$
• B. $1$
• C. $-5$
• D. $5$

Answer: Option A

Explanation:

• A. $\frac{81}{4}$
• B. $\frac{4}{81}$
• C. 7
• D. 3

Answer: Option D

Explanation:

• A. $3$
• B. $1$
• C. $2$
• D. $4$

Answer: Option B

Explanation:

• B. 1
• C. 2
• D. 4

Answer: Option B

Explanation:

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option B

Explanation:

• A. $\left(x^2+x+1\right)\left(x^2+x-1\right)$
• B. $\left(x^2-x+1\right)\left(x^2+x-1\right)$
• C. $\left(x^2+x+1\right)\left(x^2-x+1\right)$
• D. $\left(x^2+x+1\right)\left(x+x+1\right)$

Answer: Option C

Explanation:

• A. $x^2-x+1$
• B. $x^3+1$
• C. $x+1$
• D. $x^2+x+1$

Answer: Option A

Explanation: