• A. x-2
• B. 2x-1
• C. x 2 − 1
• D. x 2 + 1

Answer: Option C

Explanation:

• A. 4
• B. 20
• C. 28
• D. 12

Answer: Option B

Explanation:

• A. 2
• B. 3
• C. 4
• D. 1

Answer: Option B

Explanation:

• A. 2
• B. 0.5
• C. 5
• D. 0.05

Answer: Option C

Explanation:

• A. 5
• B. 3
• C. -2
• D. -3

Answer: Option B

Explanation:

• A. (-∝, 2) ∪ (5/2, +∝)
• B. (-∝, 1) ∪ (3, +∝)
• C. (1/2, 3/2)
• D. (-∝, 1/2) ∪ (3/2, +∝)

Answer: Option D

Explanation:

• A. (7x + 2) (x - 3)
• B. (x - 2) (x + 3)
• C. (x + 7) (x - 3)
• D. (7x - 2) (x + 3)

Answer: Option D

Explanation:

• A. x = 2
• B. x = 9
• C. x = - 4
• D. x = 4

Answer: Option C

Explanation:

• A. 2x4 + 1
• B. 2x2x4 - 1
• C. 2x2x4 + 1
• D. 2x4 - 1

Answer: Option D

Explanation:

• A. a2 + b2
• B. a2 - b2
• C. (a + b)2/2 - (a - b)2/2
• D. (a + b)2 + ( a - b)2

Answer: Option A

Explanation:

• A. x = 1
• B. x = -1/2
• C. x = 2
• D. x = -2

Answer: Option D

Explanation:

• A. 4a - 1
• B. 1
• C. a

Answer: Option D

Explanation:

• A. ৫
• B. -৫
• C. $\frac{১}{৫}$
• D. $-\frac{১}{৫}$

Answer: Option C

Explanation:

• A. ৩৫৭২৫
• B. ৪২৯২৫
• C. ৪৫৫০০
• D. ৪৭২২৫

Answer: Option B

Explanation:

• A. $\frac{৩}{৮}$
• B. $\frac{২}{৫}$
• C. $\frac{৭}{১০}$
• D. $\frac{১১}{১৮}$

Answer: Option B

Explanation: