1 . x- 1 ⁄ x=5 হলে x2+1 ⁄ x2=কত?

• A. 21
• B. 27
• C. 28
• D. 29

Answer: Option B

Explanation:

2 . Which of the following is a solution to the equation x+x2=1 ---

• A. 1
• B.
• C. 1/2
• D. None of these

Answer: Option D

Explanation:

3 . x3-0.001=0,x2=?

• A. $100$
• B. $10$
• C. $\frac{1}{10}$
• D. $\frac{1}{100}$

Answer: Option D

Explanation:

4 . log10x2=log10x2

• A. $1,0$
• B. $1,10$
• C. $1,100$
• D. $10,100$

Answer: Option C

Explanation:

5 . x4-x2+1=0

• A. $3$
• B. $1$
• C. $2$
• D. $4$

Answer: Option B

Explanation:

6 . x>0

• A. $4$
• B. $3$
• C. $2$
• D. $0$

Answer: Option A

Explanation:

7 . x2=?

• A. $x^2$
• B. $x$
• C. $-x$
• D. $\pm x$

Answer: Option D

Explanation:

8 . x+1x=2

• A. 0
• B. -2
• C. -3
• D. -1

Answer: Option A

Explanation:

9 . x-1x=4

• A. 18
• B. 16
• C. 14
• D. 22

Answer: Option A

Explanation:

10 . x-1x=4

• A. 18
• B. 16
• C. 11
• D. 15

Answer: Option A

Explanation:

11 . x-1x2=3

• A. $0$
• B. $6$
• C. $6\sqrt{3}$
• D. $9$

Answer: Option C

Explanation:

12 . 9x2=6x-2

• A. -2
• B. 2
• C. 3
• D. 0

Answer: Option D

Explanation:

13 . 25x2=y2-4

• A. $25x^2+4=y^2$
• B. $75x^2=3y^2-12$
• C. $25x^2=\left(y+2\right)\left(y-2\right)$
• D. $5x=y-2$

Answer: Option D

Explanation:

14 . x2=4x

• A. 4
• B. 3
• C. 2
• D. 0

Answer: Option A

Explanation:

15 . x2+y2+x2=5,x+y+z=3

• A. -5
• B. -4
• C. -3
• D. -2

Answer: Option D

Explanation:

16 . x4-x-1=0

• A. 0
• B. 1
• C. 2
• D. 4

Answer: Option B

Explanation:

17 . x4-x2+1=0

• A. 4
• B. 2
• C. 1
• D. 0

Answer: Option C

Explanation:

18 . 4x2+7x2+3x2=?

• A. $14x^4$
• B. $14x^6$
• C. $14x^2$
• D. $12x^2$

Answer: Option C

Explanation:

19 . 4y2-5x2=20

• A. $3x=\pm 5$
• B. $3x=\pm \frac{1}{5}$
• C. $3y=\pm \frac{1}{5}$
• D. $3y=\pm 5$

Answer: Option D

Explanation:

20 . 2y2-x2=1

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

Answer: Option B

Explanation:

21 . ∫dx25-4x2=কত ? 

• A. $\frac{1}{2}{\sin }^{-1}\frac{2x}{5}+k$
• B. $\frac{5}{2}{\sin }^{-1}\frac{2x}{5}+k$
• C. $\frac{5}{2}{\cos }^{-1}\frac{2x}{5}+k$
• D. ${\sin }^{-1}\frac{2x}{5}+k$

Answer: Option A

Explanation:

22 . tan-12x1-x2=sin-12a1+a2+cos-11-b21+b2

• A. $\frac{a-b}{1+ab}$
• B. $\frac{a+b}{1-ab}$
• C. $\frac{2ab}{1+ab}$
• D. $\frac{2ab}{1-ab}$

Answer: Option B

Explanation:

23 . ∫xdx1-x2=?

• A. $-\sqrt{x}+C$
• B. $-\sqrt{1-x}+C$
• C. $\sqrt{1-x^2}+C$
• D. $-\sqrt{1-x^2}+C$

Answer: Option D

Explanation:

24 . tansin-11-x2=sincos-115

• A. $\pm \frac{\sqrt{5}}{3}$
• B. $\frac{\sqrt{5}}{3}$
• C. $-\frac{\sqrt{5}}{3}$
• D. $\frac{5}{3}$

Answer: Option A

Explanation:

25 . X2-3x+1=0

• A. ৩
• B. ৭
• C. ৯
• D. ১১

Answer: Option D

Explanation:

26 . x+1x=2

• A. -2
• B. -1
• C. -3
• D. 0

Answer: Option D

Explanation:

27 . x2+1=3x

• A. 2
• B. 1
• C. 0
• D. 3

Answer: Option B

Explanation:

28 . x2+1x2=79

• A. ± 9
• B. ± 8
• C. -9
• D. -8

Answer: Option A

Explanation:

29 . 2x+23=3

• A. $\frac{1}{4}$
• B. $\frac{1}{8}$
• C. 4
• D. 8

Answer: Option A

Explanation:

30 . x2+1=2x

• A. 2
• B. 1
• C. 0
• D. কোনোটিই নয়

Answer: Option C

Explanation:

31 . x-1x=3, x2+1x2=?

• A. 13
• B. 11
• C. 9
• D. 15

Answer: Option B

Explanation:

32 . x4-x2-1=0

• A. 0
• B. 1
• C. 2
• D. 3

Answer: Option B

Explanation:

33 . A=X:X∈N এবং X2<36

• A. {1,2,3,4,5}
• B. {2,3,5}
• C. {2}
• D. ∅

Answer: Option C

Explanation:

34 . x2+1=2x

• A. 2
• B. 1
• C. 0
• D. 3

Answer: Option C

Explanation:

35 . xy+yx=3

• A. 6
• B. 7
• C. 9
• D. 10

Answer: Option B

Explanation:

36 . 4x2+ 7x2+3x2=?

• A. $14x^4$
• B. $14x^6$
• C. $14x^2$
• D. $14x^2$

Answer: Option C

Explanation:

37 . x4-x2+1=0

• A. 14
• B. 1
• C. 5
• D. 3

Answer: Option B

Explanation:

38 . x4-x2+1=0

• A. 1
• B. 2
• C. 0
• D. 3

Answer: Option A

Explanation:

39 . x2-1x2=4

• A. ৫
• B. ৪
• C. ৩
• D. ২

Answer: Option D

Explanation:

40 . x2+1x2=38

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

Answer: Option B

Explanation:

41 . x2=3x

• A. $\left\{\right\}$
• B. $\left\{0\right\}$
• C. $\left\{3\right\}$
• D. $\left\{0,\sqrt{3}\right\}$

Answer: Option D

Explanation:

42 . x=2+1

• A. $0$
• B. $3.33$
• C. $-2$
• D. $4$

Answer: Option B

Explanation:

43 . x2+1x2=3

• A. $16$
• B. $9$
• C. $8$
• D. $0$

Answer: Option B

Explanation:

44 . 3x2=94

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

Answer: Option C

Explanation:

45 . B=x:x2=9,2x=4

• A. $\left\{\right\}$
• B. $\left\{-3,3\right\}$
• C. $\left\{3,2\right\}$
• D. $\left\{-3,3,2\right\}$

Answer: Option D

Explanation:

46 . x2+1-3x=0

• A. $0$
• B. $1$
• C. $4$
• D. $10$

Answer: Option B

Explanation:

47 . x2+1x2=8

• A. $14$
• B. $16$
• C. $22$
• D. $24$

Answer: Option C

Explanation:

48 . 1+6x-7x2=?

• A. $\left(1-x\right)\left(1-7x\right)$
• B. $\left(1+x\right)\left(1+7x\right)$
• C. $\left(1+x\right)\left(1-7x\right)$
• D. $\left(1-x\right)\left(1+7x\right)$

Answer: Option D

Explanation: