• A. 1
• B. 5
• C. 8
• D. 10

Answer: Option D

Explanation:

• A. $a$
• B. $a>b$
• C. $a=b$
• D. $a=not b$

Answer: Option C

Explanation:

• A. $x-1$
• B. $x-2$
• C. $x-3$
• D. $x-4$

Answer: Option D

Explanation:

• A. $\pm 1$
• B. $\pm 7$
• C. $\pm 5$
• D. $\pm 3$

Answer: Option B

Explanation:

• A. $4$
• B. $2\sqrt{2}$
• C. $4\sqrt{2}$
• D. $8$

Answer: Option B

Explanation:

• A. $\frac{2}{5}$
• B. $\frac{1}{3}$
• C. $3$
• D. $5$

Answer: Option D

Explanation:

• A. $3$
• B. $1$
• C. $0$
• D. $-1$

Answer: Option C

Explanation:

• A. $\sqrt{3}$
• B. $1$
• C. $2\sqrt{2}$
• D. $8$

Answer: Option B

Explanation:

• A. 2
• B. 4
• C. -6
• D. -8

Answer: Option B

Explanation:

• A. $x+2$
• B. $x+4$
• C. $x+3$
• D. $2\left(x+3 \right)$

Answer: Option D

Explanation:

• A. $\frac{1}{2}\left(x-4\right)\left(x+2\right)$
• B. $\frac{1}{2}\left(x+4\right)\left(x-2\right)$
• C. $\frac{1}{2}\left(x+4\right)\left(x+2\right)$
• D. $\frac{1}{2}\left(x-4\right)\left(x-2\right)$

Answer: Option D

Explanation:

• A. $6$
• B. $8$
• C. $10$
• D. $12$

Answer: Option C

Explanation:

• A. $\frac{5}{3}$
• B. $\frac{2}{3}$
• C. $\frac{3}{5}$
• D. $\frac{5}{7}$

Answer: Option A

Explanation:

• A. $\frac{x\left(x+1\right)\left(2x+1\right)}{6}$
• B. $\frac{x\left(x+1\right)}{2}$
• C. $x$
• D. ${\left\{\frac{x\left(x+y\right)}{2}\right\}}^2$

Answer: Option A

Explanation:

• A. $x=1,y=-1$
• B. $x=1,y=1$
• C. $x=-1,y=-1$
• D. $x=-1,y=1$

Answer: Option D

Explanation: