• A. $2$
• B. $8$
• C. $16$
• D. $15$

Answer: Option D

Explanation:

• A. $x+y+1$
• B. $x-y+2xy$
• C. $x+y-1$
• D. $x-y-1$

Answer: Option C

Explanation:

• A. $2$
• B. $1$
• C. $3$
• D. $4$

Answer: Option B

Explanation:

• A. 4
• B. 6
• C. 3
• D. 2

Answer: Option D

Explanation:

• A. $-c^2$
• B. $c^2$
• C. $bc$
• D. $ca$

Answer: Option B

Explanation:

• A. $6$
• B. $7$
• C. $8$
• D. $9$

Answer: Option C

Explanation:

• A. $0$
• B. $1$
• C. $a+b+c$
• D. $-1$

Answer: Option A

Explanation:

• A. $40$
• B. $36$
• C. $32$
• D. $30$

Answer: Option B

Explanation:

• A. $0$
• B. $1$
• C. $2$
• D. $3$

Answer: Option A

Explanation:

• A. $16$
• B. $9$
• C. $8$
• D. $0$

Answer: Option B

Explanation:

• A. $2:3$
• B. $3:2$
• C. $2:1$
• D. $1:2$

Answer: Option C

Explanation:

• A. $In\left|x\right|+c$
• B. $\log {10}^x+C$
• C. $-\frac{1}{x^2}$
• D. $-\frac{1}{2x^2}$

Answer: Option A

Explanation:

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

Answer: Option B

Explanation:

• A. $-2\le x\le 0$
• B. $0\le x\le 2$
• C. $-2\le x\le 2$
• D. $-4\le x\le 4$

Answer: Option C

Explanation:

• A. $1$
• B. $2^n-1$
• C. $2^n+1$
• D. $3^{n-1}$

Answer: Option C

Explanation: