• A. $25x$
• B. $5^{x+1}$
• C. $5^{5x}$
• D. ${25}^x$

Answer: Option B

Explanation:

• A. $\pm 40$
• B. $\pm 6$
• C. $\pm 7$
• D. $\pm 5$

Answer: Option B

Explanation:

• A. 5
• B. 4
• C. 8
• D. 7

Answer: Option C

Explanation:

• A. (x + 3)(2x - 5)
• B. (x - 3)(2x + 5)
• C. (x + 3)(2x + 5)
• D. (x - 3)(2x - 5)

Answer: Option A

Explanation:

• A. 1
• B. -1
• C. 3x

Answer: Option A

Explanation:

• A. $3x^2+4y^2=2$
• B. $xy=1$
• C. $x+y=4$
• D. $x^2+y^2=5$

Answer: Option D

Explanation:

• A. 3
• B. 4
• C. 2
• D. 6

Answer: Option B

Explanation:

• A. $(x+2)$
• B. $(x+4)$
• C. ${(x+2)}^2$
• D. $2(x+2)$