• A. ${\left(a+b\right)}^2-{\left(a-b\right)}^2$
• B. ${\left(a-b\right)}^2-{\left(a+b\right)}^2$
• C. ${\left(a+b\right)}^2+{\left(a-b\right)}^2$
• D. ${\left(a+b\right)}^2-4ab$

Answer: Option C

Explanation:

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

Answer: Option A

Explanation:

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

Answer: Option B

Explanation:

• A. $a{m}^{m+n}$
• B. ${\left(ab\right)}^3$
• C. $a^m$
• D. $a^{m-n}$

Answer: Option B

Explanation:

• B. 1
• C. 2
• D. 4

Answer: Option B

Explanation:

• B. 1
• C. 2
• D. 4

Answer: Option A

Explanation:

• A. abc
• B. 3abc
• C. 6abc
• D. 9abc

Answer: Option B

Explanation:

• A. ৩ : ১
• B. ১ : ৪
• C. ৫ : ১
• D. ৭ : ১

Answer: Option D

Explanation:

• A. ৩ দিনে
• B. ৪ দিনে
• C. ৫ দিনে
• D. ৬ দিনে

Answer: Option D

Explanation:

• A. 23
• B. 27
• C. 30
• D. 33

Answer: Option B

Explanation:

• A. 27
• B. 47
• C. 57
• D. 77

Answer: Option B

Explanation:

• A. 7
• B. 9
• C. 11
• D. 13

Answer: Option C

Explanation:

• A. ৫
• B. ৮
• C. ৬
• D. ১০

Answer: Option B

Explanation:

• A. ২টি
• B. ৪টি
• C. ৩টি
• D. ১টি

Answer: Option A

Explanation:

• A. 14
• B. 12
• C. 16
• D. 18

Answer: Option A

Explanation: