• A. a - c
• B. a - b
• C. 1
• D. b + c

Answer: Option C

Explanation:

• A. $a^{\frac{1}{3}}$
• B. $a^{-\frac{1}{3}}$
• C. $a^3$
• D. $a^{-3}$

Answer: Option A

Explanation:

• A. a
• B. $1$
• C. $a^{\frac{1}{3}}$
• D. $a^3$

Answer: Option C

Explanation:

• A. (a2 + 2a + 2)(a2 + 2a - 2)
• B. (a2 + 2a + 2)(a2 - 2a + 2)
• C. (a2 - 2a + 2)(a2 + 2a - 2)
• D. (a2 - 2a - 2)(a2 - 2a + 2)

Answer: Option B

Explanation:

• A. (a2 + a + 1) (a2 + a + 1)
• B. (a2 - a - 1) (a2 - a - 1)
• C. (a2 - a + 1) (a2 + a - 1)
• D. (a2 + a + 1) (a2 - a + 1)

Answer: Option D

Explanation:

• A. (a - 2) (a2 - 2a + 4)
• B. (a + 2) (a2 - 2a + 4)
• C. a (a - 2) (a2 + 2a + 4)
• D. (a - 2) (a2 + 2a + 4)

Answer: Option C

Explanation:

• A. a - b
• B. a + 1
• C. 1
• D. a - 1

Answer: Option C

Explanation:

• A. 49:70:40
• B. 49:40:70
• C. 40:70:49
• D. 70:49:40

Answer: Option D

Explanation:

• A. 20:35:42
• B. 24:30:35
• C. 35:30:24
• D. 42:35:20

Answer: Option B

Explanation:

• A. -2
• B. -3
• C. -4

Answer: Option C

Explanation:

• A. 6
• B. 4
• C. কোনোটিই নয়
• D. 2

Answer: Option C

Explanation:

• B. 1
• C. 2
• D. 3

Answer: Option A

Explanation:

• A. AB Not = BA
• B. AB = BA
• C. AB =-BA
• D. BA=B

Answer: Option A

Explanation:

• A. ৮
• B. ৯
• C. ৬
• D. ৫

Answer: Option B

Explanation:

• A. $45\sqrt{5}$
• B. $47\sqrt{6}$
• C. $46\sqrt{5}$
• D. $43\sqrt{5}$

Answer: Option C

Explanation: