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0% found this document useful (0 votes)
65 views67 pages

Sheet - 07

Uploaded by

Sourabh Mondal
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Class

07 Algebra

Type – 02 1
9. If x = 5 + 2 6 then find x+ =?
x
1
2 1
1. If x + 2 = 9 then find x – =?
x x (a) 2 3 (b) 3 2 (c) 2 6 (d) 6 2

(a) 7 (b) 11 (c) 5 (d) 13


7 x 2 + 1 – 17x  x + 1 2
10. If
  = 2 then find 
  = ?
1
2 1 7x  x 
2. If x + 2 = 3 then find x + =?
x x
(a) 6.42 (b) 6.53 (c) 6.86 (d) 6.31
(a) 15 (b) 12 (c) 5 (d) 12
1 1
11. If x +
4
4 = 14159 then find
x+ =?
2 1 1 x x
3. If x + 2 = 10 then find
x+ =?
x x (a) 9 (b) 12 (c) 10 (d) 11
(a) 18 (b) 15 (c) 12 (d) 15
1 1
12. If x +
4
4 = 14 then find
x+ =?
1 x x
y 1

2
If y +
y

4.
y 2 = 74, y > 1 find =?
(a) 3 (b) 4 (c) 6 (d) 7
(a) 6 2 (b) 2 19 1 1
4
13. If a + 4 = 47 then find
a+ =?
(c) – 6 (d) – 2
a a
2 19
(a) 3 (b) 7 (c) 11 (d) 9
160 1 80 1
5. If x + = 29 then find x + 80 = ? 1 1
x 160 x 14. If x +
4
x+
4 = 527 then find =?
x x
(a) 15 (b) 31 (c) 30 (d) 3
(a) 3 (b) 5 (c) 23 (d) 7
148 1 74 1
6. If x + 148 = 14 then find x + =? 1 1
x x 74 15. If k +
4
4 = 194 then find
k+ =?
k k
(a) 12 (b) 12 (c) 15 (d) 4
(a) 4 (b) 5 (c) 6 (d) 7

4 1 1 1
7. If x + 4 = 38 then find
x2 – 2 = ?
x x 16. If x8 – 1442x4 + 1 = 0 then find x – =?
x
(a) 3 (b) 4 (c) 5 (d) 6 (a) 5 (b) 4 (c) 6 (d) 8

2 1 x 2 – 1 + 2x 17. If x4 + x–4 = 194, x > 0 then find (x – 2)2 = ?


8. If x + = 66 then find =?
x2 x (a) 1 (b) 6 (c) 2 (d) 3
(a) ±8 (b) 10, – 6 (c) 6, – 10 (d) ± 4

FOLLOW RAKESH YADAV SIR ON SOCIAL MEDIA 1


1 29 1 a
18. If x + = 2 then find x + =?
x x 29 27. If the sum of and its reciprocal is 1 and a  0,
b
(a) 2 (b) – 2 (c) – 1 (d) 1 b  0 then the value of a³ + b³ is:
a
1 2 a  0,
19. If x + = then find x23 + x19 + x17 + x13 + x4 b
x 2
b  0 a³ + b³
+5=?
(a) 2 (b) –1 (c) 0 (d) 1
(a) – 1 (b) 4 (c) 0 (d) 5
x y
1 28. If + =?
20. If x + = 2 then find x + x + x + 2 ?
9 5 4
y x
x
(a) 1 (b) – 1 (c) 0 (d) 2 x³ – y³ = ?

32 1 (a) x - y (b) xy (c) 0 (d) 1


21. If 2x 2 – 2 2x + 2 = 0 then find x + =?
x 32 1
1
(a) – 1 (b) 1 (c) – 2 (d) 2 29. If x 4 + 1 =1
x 4
1
22. If A + =1 1
A x512 + =?
6 6
x 512
A + A –1
=? (a) –1 (b) 2 (c) –2 (d) 1
A 6 + A 6 +1
(a) 0 (b) –1 (c) 2 (d) 1 1
30. If a + =–1
23. If a2 + a + 1 = 0 a
a9 = ? (1 – a + a²) (1 + a – a²) is ?

(a) 2 (b) 3 (c) 1 (d) 0 (a) 1 (b) 0 (c) 4 (d) –4


24. If a² + a + 1 = 0 31. If x² – 5x + 25 = 0
a5 + a4 + 1 = ? x5 – 5x4 – 3100 = ?

(a) 1 (b) 0 (c) a + 1 (d) a² (a) 25 (b) 250 (c) 50 (d) 350

1 1 1
25. If x² + =? 1. If x + = 20 then x – =?
x² x x
x18 + x12 + x6 + 1 = ? (a) 396 (b) 339
(a) 1 (b) 2 (c) 0 (d) –1
(c) 330 (d) 395
x y
26. If + = – 1, (x, y  0) 1 1
y x 2. If x + = 10 then x – =?
x x
x³ – y³ = ?
(a) 96 (b) 96 (c) 90 (d) 90
1
(a) 1 (b) –1 (c) 0 (d) 1 1
2 3. If x + = 5, then find x – =?
x x
(a) 29 (b) 23 (c) 21 (d) 13

2 FOLLOW RAKESH YADAV SIR ON SOCIAL MEDIA


1 1 13
4. If x – = 8, then x + = ? (a) 3 13 (b) 13 (c) 1 (d) 3
x x
(a) 65 (b) 68 (c) 69 (d) 70

m
m +
n n

m
m –
n n
13. If = 10 then =?
1 1
5. If x – = 7 , then x + x = ?
x (a) 96 (b) (c) 96 (d)
96 91
(a) 9 (b) 11 (c) 11 (d) 9

m
m +
n n

m
m –
n n
1 14. = 3 5 then =?
6. If x – = 1 then x =?
x
(a) 41 (b) 7 (c) 63 (d) 0
5 +1 2 +1
(a) (b) 1 1
2 5 15. If x + = 0 then x – =?
x + 10 x +10
(a) 96 – 10 (b) 10 – 96
2 +1 1+ 5
(c) (d)
5 2 (c) 96 + 10 (d) 10 + 96
1 1 1 1
7. If x99 + 99 = 13, then x –
99
=? 16. If x + = 0 then x – =?
x x 99 x+5 x+5
(a) 113 (b) 165 (c) 191 (d) 3 (a) 21 + 5 (b) 5 – 21
1 (c) 21 – 5 (d) 5 + 21
8. x3.925 – 3.925 = 4 then find the value of x3.925 +
x
1 1
1 17. If y – = 20 then y + =?
=?
y – 17 y – 17
x 3.925
(a) 13 + 17 s(b)
(a) 2 5 (b) 5 2 (c) 2 (d) 5
17 +13
1 1
9. If x² – 2 = 9 5 , then x² + 2 = ? (c) 13 + 17 (d) 13 – 17
x x
(a) 409 (b) 209 (c) 1 (d) 0 1 1
18. If x + = 0, then find x – =?
x + 15 x +15
1 1
10. If x = then x + =? (a) 221 – 15 (b) 15 – 221
x – 10 x
(c) 225 (d) None of these
(a) 104 (b) 103 (c) 104 (d) 103
1– a a
1 1 19. If 3 + 9 = 19 – 3 , find a = ?
11. If a = (a > 0) then find a + is ? a 1– a
a– 6 a
3 7 1 9
(a) 6 (b) 10 (c) 15 (d) 7 (a) , (b) ,
10 10 10 10
1 3x
12. If X + = 13 then = ? 2 3 1 4
x x² – 1 (c) , (d) ,
5 5 5 5
20. What is the value of x in the equation/ x

FOLLOW RAKESH YADAV SIR ON SOCIAL MEDIA 3


1+ x x 1
– = =?
x 1+ x 6
(a) –2 (b) 3 (c) 2 (d) N.O.T

1 1
21. If x + = 3 then x² – 2 = ?
x x
(a) 4 5 (b) 5 3 (c) 3 (d) 3 5
1 1
22. If x + = 4 then x² – 2 = ?
x x
(a) 6 3 (b) 4 3 (c) 8 3 (d) 5 3

4 FOLLOW RAKESH YADAV SIR ON SOCIAL MEDIA

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