• A. $12$
• B. $24$
• C. $36$
• D. $40$

Answer: Option B

Explanation:

• A. $a\left(a-3\right)$
• B. $a-3$
• C. $\left(a-1\right)\left(a-3\right)$
• D. $a\left(a-1\right)\left(a-3\right)$

Answer: Option B

Explanation:

• A. $2/3$
• B. $3/2$
• C. $4/3$
• D. $3/4$

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. $\left(m+5\right)\left(m-3\right)$
• B. $\left(m-5\right)\left(m+3\right)$
• C. $\left(m+5\right)\left(m+3\right)$
• D. $\left(m-5\right)\left(m-3\right)$

Answer: Option C

Explanation:

• A. 35
• B. 45
• C. 54
• D. 55

Answer: Option C

Explanation:

• A. $\sqrt{48}$
• B. $0$
• C. $\sqrt{24}$
• D. $\sqrt{6}$

Answer: Option C

Explanation:

• A. 49
• B. 39
• C. 29
• D. 19

Answer: Option D

Explanation:

• A. $a^3+8b^3-6a^{2}b-12a{b}^2$
• B. $a^3-8b^3-6a^{2}b-12a{b}^2$
• C. $a^3-8b^3-6a^{2}b+12a{b}^2$
• D. $a^3-8b^3-12a^{2}b+6a{b}^2$

Answer: Option C

Explanation:

• A. 22
• B. 18
• C. 16
• D. 14

Answer: Option B

Explanation:

• A. 4
• B. 12
• C. 14
• D. 16

Answer: Option C

Explanation:

• A. $-2$
• B. $2$
• C. $1$
• D. $-1$

Answer: Option D

Explanation:

• A. 16
• B. 12
• C. 10
• D. 9

Answer: Option B

Explanation:

• A. $2\left(a-8\right)$
• B. $\left(1+5\right)$
• C. $\left(a+4\right)$
• D. $\left(a+8\right)$

Answer: Option D

Explanation:

• A. 8
• B. 6
• C. 4
• D. 2

Answer: Option C

Explanation: