ML Aggarwal Expansions MCQs Class 9 ICSE Maths APC Understanding Solutions . Solutions of MCQs. This post is the Solutions of ML Aggarwal Chapter 3- Expansions for ICSE Maths Class-9. APC Understanding ML Aggarwal Solutions (APC) Avichal Publication Solutions of Chapter’s MCQs Expansions for ICSE Board Class-9. Visit official website CISCE for detail information about ICSE Board Class-9.
ML Aggarwal Expansions MCQs Class 9 ICSE Maths Solutions
| Board | ICSE |
| Publications | Avichal Publishig Company (APC) |
| Subject | Maths |
| Class | 9th |
| Chapter-3 | Expansions (MCQ) |
| Writer | ML Aggarwal |
| Book Name | Understanding |
| Topics | Solution of MCQ Questions |
| Academic Session | 2021-2022 |
MCQs Solutions of ML Aggarwal for ICSE Class-9 Chapter-2, Expansions
Note:- Before viewing Solutions of Chapter -3 Expansions Class-9 of ML Aggarwal Solutions . Read the Chapter Carefully then solve all example given in MCQs . The Chapter-3 Expansions Class-9 is Main Chapter in Class 9 Mathematics.
Expansions MCQs Chapter 3
ML Aggarwal Class 9 ICSE Maths Solutions
Page 85
Question 1. If x + 1/x = 2, then x2 + 1/x2 is equal to
(a) 4
(b) 2
(c) 0
(d) None of these
Answer : (b) 2
Hint:
x + 1/x = 2
Or, (x + 1/x)2 = 22
Or, x2 + 1/x2 + 2 = 4
Or, x2 + 1/x2 = 2
Question 2. If x2 + y2 = 9 and xy = 8, then x + y is equal to
(a) 25
(b) 5
(c) -5
(d) ± 5
Answer : (d) ± 5
Hint:
x2 + y2 = 9, xy = 8
Or, x2 + y2 + 2xy = 9 + 2xy
Or, (x2 + y)2 = 9 + 2 × 8
Or, x + y = √25 = ± 5
Question 3. (102)2 – (98)2 is equal to
(a) 200
(b) 400
(c) 600
(d) 800
Answer : (d) 800
Hint:
(102)2 – (98)2 = (102 + 98) (102 – 98) = 200 × 4 = 800
Question 4. 96 × 104 is equal to
(a) 9984
(b) 9974
(c) 9964
(d) None of these
Answer : (a) 9984
Hint:
96 × 104 = (100 – 4) (100 + 4) = 1002 – 42 = 10000 – 16
= 9984
Expansions MCQs Chapter 3
ML Aggarwal Class 9 ICSE Maths Solutions
Page 86
Question 5. 1032 – 972/200 is equal to
(a) 3
(b) 4
(c) 5
(d) 6
Answer : (d) 6
Hint:
1032-972/200 = (103+47)(103-97)/200 = 200×6/200 = 6
Question 6. If x + y = 11 and xy = 24, then x2 + y2 is equal to
(a) 121
(b) 73
(c) 48
(d) 169
Answer : (b) 73
x + y = 11, xy = 24 (x+y)2 = 112 => x2 + y2 + 2 × 24 = 121
x2 + y2 = 73
Question 7. The value of 2492 – 2482 is
(a) 12
(b) 477
(c) 487
(d) 497
Answer : (d) 497
Hint:
2492 – 2482 = (249+248) (249-248) = 497×1 = 497
Question 8.
Answer :
Hint :
Question 9:
Answer :
Hint :
Question 10.
Answer :
Hint :
— : End of ML Aggarwal Expansions MCQs Class 9 ICSE Maths Solutions :–
Return to :- ML Aggarawal Maths Solutions for ICSE Class-9
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