• A. ${\left(a-b\right)}^3$
• B. $a^2-b^2$
• C. ${\left(a+b\right)}^2$
• D. $a^2+b^2$

Answer: Option C

Explanation:

• A. 1
• B. $\frac{1}{2}$
• D. 2

Answer: Option C

Explanation:

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

Answer: Option B

Explanation:

• A. -3
• B. 3
• C. 6
• D. 9

Answer: Option B

Explanation:

• A. 4
• B. 5
• C. 20
• D. 25

Answer: Option A

Explanation:

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

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

• A. $\frac{\overline{)7}}{\overline{)2}}$
• B. $\frac{\overline{)7}}{\overline{)5}}$
• C. $\frac{\overline{)5}}{\overline{)2}}$
• D. $\frac{\overline{)7}}{\left|2\right|5}$

Answer: Option A

Explanation:

• A. $\frac{৫}{৪}$
• B. $\frac{২}{৩}$
• C. $\frac{১}{২}$
• D. $\frac{৩}{৪}$

Answer: Option C

Explanation:

• A. x ≤ 7
• B. x ≥ 7
• D. x = 7

Answer: Option B

Explanation:

• A. 9
• B. 10
• C. 4
• D. 16

Answer: Option C

Explanation:

• A. 6.5 মিটার
• B. 3.5 মিটার
• C. 4.5 মিটার
• D. 5.5 মিটার

Answer: Option D

Explanation:

• A. $\left\{x+iy\right\}$
• B. $\left\{x+iy;x,y\in R\right\}$
• C. $\left\{2i, 3i.....\right\}$
• D. $\left\{i, \pm 3i,2\right\}$

Answer: Option B

Explanation:

• A. 60°
• B. 45°
• C. 30°
• D. 40°

Answer: Option B

Explanation:

• A. $4\sqrt{2}$
• B. $\sqrt{2}$
• C. $\frac{1}{2}\sqrt{2}$
• D. $2\sqrt{2}$

Answer: Option D

Explanation: