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

Answer: Option D

Explanation:

• A. 6520
• B. 6530
• C. 6540
• D. 6560

Answer: Option D

Explanation:

• A. 6
• B. 5
• C. 8
• D. 7

Answer: Option D

Explanation:

• A. $1$
• B. $-1$
• C. $\pm 1$
• D. $0$

Answer: Option D

Explanation:

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

Answer: Option A

Explanation:

• A. $2-\frac{2}{x^2-y^2}$
• B. $2-\frac{2x}{x^2-y^2}$
• C. $\frac{2}{x^2-y^2}$
• D. $\frac{2x}{x^2-y^2}-2$

Answer: Option D

Explanation:

• A. $x=\frac{2}{7}$
• B. $x=\frac{7}{2}$
• C. $x=2$
• D. $x=7$

Answer: Option B

Explanation:

• A. $x\in [-1,3)$
• B. $x\in [-1,3]$
• C. $x\in (-1,3)$
• D. $x\in (-1,3]$

Answer: Option C

Explanation:

• A. 4
• B. 1
• C. 6
• D. 8

Answer: Option A

Explanation:

• A. $\left(-\alpha ,1\right)\cup \left(1,+\alpha \right)$
• B. $\left(-\alpha ,0\right)\cup \left(0,\alpha \right)$
• C. $\left(-\alpha ,\frac{1}{3}\right)\cup \left(\frac{1}{2},\alpha \right)$
• D. $\left(-\alpha ,\frac{1}{2}\right)\cup \left(\frac{1}{2},\alpha \right)$

Answer: Option D

Explanation:

• A. $\frac{3}{2}$
• B. $\frac{2}{3}$
• C. $\frac{5}{2}$
• D. $\frac{2}{5}$

Answer: Option A

Explanation:

• A. $1$
• B. $\frac{1}{3}$
• C. $3$
• D. $9$

Answer: Option C

Explanation:

• A. 1
• B. 2
• C. 4
• D. 7.52

Answer: Option D

Explanation:

• A. $\sqrt{6}-2$
• B. $\frac{\sqrt{6}+2}{2}$
• C. $\frac{\sqrt{6}-2}{2}$
• D. $6-\sqrt{2}$

Answer: Option C

Explanation:

• A. $a$
• B. $\frac{a}{a+1}$
• C. $\frac{a}{1-a}$
• D. $\frac{a}{a-1}$

Answer: Option D

Explanation: