• A. $2$
• B. $2\sqrt{3}$
• C. $2\sqrt{6}$
• D. $4\sqrt{3}$

Answer: Option D

Explanation:

• A. 4
• B. 20
• C. 28
• D. 12

Answer: Option B

Explanation:

• A. 5
• B. 6
• C. 7
• D. 8

Answer: Option C

Explanation:

• A. x = 5, y = 7
• B. x = 2, y = 5
• C. x = 3, y = 7
• D. x = 7, y = 5

Answer: Option D

Explanation:

• A. (2y2 + 6y + 2)(y2 - 3y + 1)
• B. (2y2 - 7y + 1)(2y2 + 7y + 1)
• C. 2(y2 + 3y + 1)(y2 - 3y + 1)
• D. 2(y2 + 3y + 1)(y2 -3y -1)

Answer: Option C

Explanation:

• A. $x^2+y^2=4$
• B. $z^2+y^2=1$
• C. $2\left(x^2++y^2\right)=1$
• D. $3\left(x^2+y^2\right)=4$

Answer: Option B

Explanation:

• A. 1
• B. 2 n − 1
• C. 2 n + 1
• D. 3 n − 1

Answer: Option C

Explanation:

• A. $30$
• B. $60$
• C. $225$
• D. $150$

Answer: Option C

Explanation:

• A. 6
• B. -4
• C. -6
• D. 3

Answer: Option A

Explanation:

• A. 2
• B. -2
• C. 1
• D. -3

Answer: Option C

Explanation:

• A. 9
• B. 3
• C. 7
• D. 1

Answer: Option C

Explanation:

• A. 2n + 1
• B. 2n - 1
• C. - 2
• D. 4

Answer: Option C

Explanation:

• A. - 10
• B. 3/4
• C. 4/3
• D. 10

Answer: Option A

Explanation:

• A. $0$
• B. $2/3$
• C. $1$
• D. $3/2$

Answer: Option A

Explanation:

• A. (x - 5) (x - 7)
• B. (x + 5) (x + 7)
• C. (5 - x) (7 + x)
• D. (x - 5)

Answer: Option C

Explanation: