• A. (x - 1)(x2 + x + 1)
• B. (x + 1)(x2 - x + 1)
• C. x(x - 1)(x - 1)
• D. x(x + 1)(x - 1)

Answer: Option D

Explanation:

• A. (x - 3) (x2 + 2x + 3) (x2 + x + 1)
• B. (x - 3) (x2 - x + 3)
• C. (x - 3) (x2 + 2x + 3)
• D. (x - 3) (x2 + x + 3)

Answer: Option A

Explanation:

• A. 2
• B. 4
• C. -6
• D. -8

Answer: Option B

Explanation:

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

Answer: Option D

Explanation:

• A. 3
• B. 4
• C. 5
• D. 6

Answer: Option B

Explanation:

• A. $\left(x+y\right)\left(x+3y\right)\left(x+5y\right)$
• B. $\left(x+y\right)\left(x+2y\right)\left(x+3y\right)$
• C. $\left(x+y\right)\left(x+4y\right)\left(x+3y\right)$
• D. $\left(x-y\right)\left(x+y\right)\left(x+2y\right)$

Answer: Option B

Explanation:

• A. $x^7-1$
• B. $x^7-1$
• C. $x^6-1$
• D. $x^5-1$

Answer: Option C

Explanation:

• A. -2
• B. -9
• C. 9
• D. 10

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

• A. (x - y)
• B. xy(x + y)
• C. xy(x - y)
• D. xy(x - y)(x + y)

Answer: Option D

Explanation:

• A. (x - 1) (x2 + 5)
• B. (x + 1) (x - 1) (x2 - 5)
• C. (x + 1) (x - 1) (x2 + 5)
• D. (x + 1) (x2 + 5)

Answer: Option C

Explanation:

• A. x2 + x + 1
• B. x2 - x + 1
• C. x2 + 1
• D. x + 1

Answer: Option B

Explanation:

• A. 0.1
• B. 0.01
• C. 0.001
• D. 0.0001

Answer: Option D

Explanation:

• A. $\frac{81}{4}$
• B. $\frac{4}{81}$
• C. 7
• D. 3

Answer: Option D

Explanation:

• A. 3 : 5
• B. 1 : 2
• C. 6
• D. 15 : 30

Answer: Option B

Explanation: