• A. $4/3$
• B. $1/2$
• C. $2/3$
• D. $3/2$

Answer: Option B

Explanation:

• A. $3$
• B. $4$
• C. $5$
• D. $6$

Answer: Option D

Explanation:

• A. 3
• B. 4
• C. 5
• D. 6

Answer: Option D

Explanation:

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

Answer: Option A

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. $\left(3x+5\right)\left(4x-2\right)$
• B. $\left(3x-5\right)\left(4x+2\right)$
• C. $\left(4x+5\right)\left(3x-2\right)$
• D. $\left(4x-5\right)\left(3x+2\right)$

Answer: Option C

Explanation:

• A. $\left(3x+5\right)\left(4x-2\right)$
• B. $\left(3x-5\right)\left(4x+2\right)$
• C. $\left(4x+5\right)\left(3x-2\right)$
• D. $\left(4x-5\right)\left(3x+2\right)$

Answer: Option C

Explanation:

• A. $x<1,x>4$
• B. $x>1,x>4$
• C. $x<1,x<4$
• D. $1$

Answer: Option A

Explanation:

• A. 4
• B. 6
• C. 8
• D. 2

Answer: Option B

Explanation:

• A. $6\sqrt{3.6}$
• B. $6.6\sqrt{2}$
• C. $24.24\sqrt{3}$
• D. $24\sqrt{2.24}$

Answer: Option A

Explanation:

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

Answer: Option A

Explanation:

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

Answer: Option A

Explanation:

• A. 25
• B. 15
• C. 5
• D. 10

Answer: Option B

Explanation:

• A. $20$
• B. $40$
• C. $60$
• D. $80$

Answer: Option B

Explanation:

• A. $0.001$
• B. $0.793$
• C. $0.01$
• D. $0.0010$

Answer: Option B

Explanation: