• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option C

Explanation:

• A. $1$
• B. $2$
• C. $-2$
• D. $4$

Answer: Option B

Explanation:

• A. $x+y$
• B. $2$
• C. $0$
• D. $x^2+y^2$

Answer: Option A

Explanation:

• A. $0$
• B. $3.33$
• C. $-2$
• D. $4$

Answer: Option B

Explanation:

• A. $6$
• B. $7$
• C. $9$
• D. $10$

Answer: Option B

Explanation:

• A. ${12}^2$
• B. ${12}^3$
• C. ${12}^4$
• D. ${12}^5$

Answer: Option C

Explanation:

• A. $0$
• B. $1$
• C. $xyz$
• D. $y$

Answer: Option B

Explanation:

• A. $2$
• B. $3$
• C. $0$
• D. $1$

Answer: Option B

Explanation:

• A. $a^2$
• B. $2a^2$
• C. $\sqrt{2}{a}^2$
• D. $\sqrt{2}a$

Answer: Option B

Explanation:

• B. 1
• C. 2
• D. 4

Answer: Option A

Explanation:

• A. $1$
• B. $7-4\sqrt{3}$
• C. $2+\sqrt{3}$
• D. $1/2-\sqrt{3}$

Answer: Option B

Explanation:

• A. 4

Answer: Option A

Explanation:

• A. $\left(p+q\right)\left(p-q\right)\left(p^2+pq+q^2\right)\left(p^2-pq+q^2\right)$
• B. $\left(p+q\right)\left(p-q\right)\left(p^2-pq+q^2\right)\left(p^2+q^2\right)$
• C. $\left(p+q\right)\left(p-q\right)\left(p^2-pq+q^2\right)\left(p^2-q^2\right)$
• D. $\left(p^2+q^2\right)\left(p^2-q^2\right)$

Answer: Option A

Explanation:

• A. $\frac{\left(a+b\right)}{2}$
• B. $2x+y$
• C. $\frac{a^2-b^2}{2}$
• D. $\frac{a-b}{x-y}$

Answer: Option C

Explanation:

• A. $-2$

Answer: Option A

Explanation: