• A. -2xy
• B. 8xy
• C. 6xy
• D. 2xy

Answer: Option D

Explanation:

• A. ৯ বছর
• B. ১৮ বছর
• C. ১৪ বছর
• D. ১৫ বছর

Answer: Option B

Explanation:

• A. ২০ মি.
• B. ২৫ মি.
• C. ৩০ মি.
• D. ৪০ মি.

Answer: Option A

Explanation:

• A. ৪%
• B. ৬%
• C. ৭%
• D. ৫%

Answer: Option D

Explanation:

• A. (x+6)(x-5)
• B. (x-5)(x-6)
• C. (x+3)(2x-5)
• D. (2x+5)(x-3)

Answer: Option D

Explanation:

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

Answer: Option B

Explanation:

• A. $1$
• B. $2$
• C. $5\sqrt{2}$
• D. $6\sqrt{2}$

Answer: Option C

Explanation:

• A. $2$
• B. $\frac{1}{2}$
• C. $\frac{1}{8}$
• D. $\frac{1}{16}$

Answer: Option B

Explanation:

• B. 1
• C. 225
• D. $\frac{1}{225}$

Answer: Option C

Explanation:

• A. -6
• B. 3
• C. 6
• D. -3

Answer: Option D

Explanation:

• A. $\frac{5}{2}$
• B. $\frac{1}{2}$
• C. $\frac{125}{2}$
• D. $\frac{25}{\sqrt{5}}$

Answer: Option A

Explanation:

• A. 54
• B. 35
• C. 45
• D. 55

Answer: Option A

Explanation:

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

Answer: Option A

Explanation:

• A. $6ax-10ay$
• B. $4x+5y$
• C. $4ax-5ay$
• D. $4x-5y$

Answer: Option D

Explanation:

• A. $\frac{\sqrt{3}}{2}{a}^2$
• B. $\frac{\sqrt{3}}{2}a$
• C. $\frac{\sqrt{3}}{4}{a}^2$
• D. $\frac{\sqrt{3}}{4}a$

Answer: Option C

Explanation: