1 . x2-2x-1=0

• A. $4$
• B. $2\sqrt{2}$
• C. $4\sqrt{2}$
• D. $8$

Answer: Option B

Explanation:

2 . x+1x=-5

• A. $\frac{1}{4}$
• B. $4$
• C. $-4$
• D. $-\frac{1}{4}$

Answer: Option D

Explanation:

3 . x+1x=3

• A. 2
• B. 4
• C. 0
• D. 6

Answer: Option C

Explanation:

4 . x+1x=3

• A. $\sqrt{3}-2$
• B. $1$
• C. $5$
• D. $7$

Answer: Option B

Explanation:

5 . x+1x=2

• A. 0
• B. -2
• C. -3
• D. -1

Answer: Option A

Explanation:

6 . x+1x=5

• A. $1$
• B. $3\sqrt{5}$
• C. $5$
• D. $2\sqrt{5}$

Answer: Option D

Explanation:

7 . x+1x=2

• A. $2$
• B. $4$
• C. $27$
• D. $64$

Answer: Option A

Explanation:

8 . x+1x=4

• A. 147
• B. 52
• C. 70
• D. 76

Answer: Option D

Explanation:

9 . x+1x=5

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

Answer: Option D

Explanation:

10 . x+1x=2

• A. 2
• B. 8
• C. 4
• D. 1

Answer: Option D

Explanation:

11 . x+1x=2

• A. 2
• B. 1
• C. $\frac{1}{2}$
• D. $\frac{1}{4}$

Answer: Option B

Explanation:

12 . x+1x=2

• A. 1
• B. 2
• C. 3
• D. 8

Answer: Option B

Explanation:

13 . x2-3x+1=0

• A. 3
• B. 2
• C. 5
• D. 8

Answer: Option A

Explanation:

14 . x+1x=3

• A. 16
• B. 18
• C. 22
• D. 1

Answer: Option B

Explanation:

15 . cosθ=12x+1x

• A. $-\frac{1}{2}\left(x+\frac{1}{x^2}\right)$
• B. $\frac{1}{2}\left(x-\frac{1}{x^2}\right)$
• C. $\frac{1}{2}\left(x^2+\frac{1}{x^2}\right)$
• D. $\frac{1}{2}\left(\frac{1}{x^2}-x\right)$

Answer: Option D

Explanation:

16 . ∫115x+2x+1x+3dx=কত? 

• A. 4
• B. 2
• C. 6
• D. in 6

Answer: Option D

Explanation:

17 . x+1x=0

• A. i
• B. -i
• C. $\pm 2i$
• D. (A) and (B)

Answer: Option D

Explanation:

18 . fx=2x+1x-3

• A. R
• B. $\left(3,\infty \right)$
• C. $\left(-\infty .3\right)$
• D. $R-\left\{3\right\}$

Answer: Option A

Explanation:

19 . x+1x

• A. 29
• B. 31
• C. 32
• D. 34

Answer: Option C

Explanation:

20 . x+1x

• A. 223
• B. 123
• C. 122
• D. 323

Answer: Option B

Explanation:

21 . x+1x=2

• A. -2
• B. -1
• C. -3
• D. 0

Answer: Option D

Explanation:

22 . x+1x=3

• A. 0
• B. 18
• C. 27
• D. 9

Answer: Option B

Explanation:

23 . x2+1x2=79

• A. ± 9
• B. ± 8
• C. -9
• D. -8

Answer: Option A

Explanation:

24 . x+1x=13

• A. $-\frac{26}{27}$
• B. $\frac{1}{27}$
• C. $-\frac{1}{27}$
• D. $\frac{26}{27}$

Answer: Option A

Explanation:

25 . x+1x=6

• A. 32
• B. 30
• C. 34
• D. 28

Answer: Option A

Explanation:

26 . x+1x=5, x3+1x3=?

• A. 115
• B. 110
• C. 125
• D. 225

Answer: Option B

Explanation:

27 . x4+2x2+1=5x2

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

Answer: Option D

Explanation:

28 . x+1x=2

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option A

Explanation:

29 . x+1x=a

• A. $a^2-3a$
• B. $a^4-3a$
• C. $a^3-3a$
• D. $2a^3-3a$

Answer: Option C

Explanation:

30 . x+1x=4

• A. 52
• B. 64
• C. 76
• D. 80

Answer: Option A

Explanation:

31 . x+1x=3

• A. 0
• B. 1
• C. 2
• D. 3

Answer: Option A

Explanation:

32 . ifx+1x=2, then x3+1x3equal to-

• A. 64
• B. 14
• C. 8
• D. 2

Answer: Option D

Explanation:

33 . x+1x=4

• A. 79
• B. 194
• C. 192
• D. 193

Answer: Option B

Explanation:

34 . x+1x=5

• A. $\frac{1}{4}$
• B. 4
• C. -4
• D. $\frac{1}{6}$

Answer: Option D

Explanation:

35 . x+1x=2

• A. 1
• B. -1
• C. 0
• D. 2

Answer: Option C

Explanation:

36 . x4-y2+1=0

• A. 0
• B. 2
• C. -1
• D. 3

Answer: Option D

Explanation:

37 . x+1x=3 

• A. ৯
• B. ১২
• C. ১৫
• D. ১৮

Answer: Option D

Explanation:

38 . x+1x=7

• A. 364
• B. 334
• C. 154
• D. 512

Answer: Option A

Explanation:

39 . x+1x=4

• A. 16
• B. 14
• C. 12
• D. 10

Answer: Option B

Explanation:

40 . x+1x=2

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option B

Explanation:

41 . x+1x=3

• A. 47
• B. 51
• C. 27
• D. 49

Answer: Option A

Explanation:

42 . xx2-3x+1

• A. 2
• B. 3
• C. 4
• D. 1

Answer: Option C

Explanation:

43 . x+1x=2

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option B

Explanation:

44 . 7-43

• A. $3\sqrt{3}$
• B. $8\sqrt{3}$
• C. $14$
• D. $14+8\sqrt{3}$

Answer: Option C

Explanation:

45 . x+1x=4

• A. 1
• B. 2
• C. 3
• D. কোনোটিই নয়

Answer: Option D

Explanation:

46 . x-1x=52

• A. 25
• B. 29
• C. 28
• D. 27

Answer: Option B

Explanation:

47 . x+1x=2

• A. $-2$
• B. $2$
• C. $4$
• D. $14$

Answer: Option A

Explanation:

48 . x+1x=6

• A. $34$
• B. $32$
• C. $36$
• D. $35$

Answer: Option A

Explanation:

49 . x+1x=2

• A. 0
• B. 1
• C. 2
• D. 4

Answer: Option A

Explanation:

50 . x-1x=5

• A. $29$
• B. $30$
• C. $31$
• D. $32$

Answer: Option A

Explanation:

51 . x+1x=2

• A. 0
• B. 1
• C. 2
• D. 4

Answer: Option A

Explanation: