Hots Questions - Number System Class 9 Notes | EduRev

Mathematics (Maths) Class 9

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Class 9 : Hots Questions - Number System Class 9 Notes | EduRev

The document Hots Questions - Number System Class 9 Notes | EduRev is a part of the Class 9 Course Mathematics (Maths) Class 9.
All you need of Class 9 at this link: Class 9

Question 1. Find the value of Hots Questions - Number System Class 9 Notes | EduRev

Solution:
Since Hots Questions - Number System Class 9 Notes | EduRev 
Hots Questions - Number System Class 9 Notes | EduRev

Question 2. If Hots Questions - Number System Class 9 Notes | EduRev = 1.4142 then find the valueHots Questions - Number System Class 9 Notes | EduRev
Solution: Rationalising the denominator of Hots Questions - Number System Class 9 Notes | EduRev, we get

Hots Questions - Number System Class 9 Notes | EduRev

Hots Questions - Number System Class 9 Notes | EduRev              ........ (1)

Hots Questions - Number System Class 9 Notes | EduRev

Question 3. Find the value of 'a' in Hots Questions - Number System Class 9 Notes | EduRev
Solution:
L.H.S. = 
Hots Questions - Number System Class 9 Notes | EduRev   Hots Questions - Number System Class 9 Notes | EduRev

Hots Questions - Number System Class 9 Notes | EduRev    | using (a+b) (a-b) = a2-b2

Hots Questions - Number System Class 9 Notes | EduRev

Hots Questions - Number System Class 9 Notes | EduRev

since,  L.H.S. =  R.H.S.

Hots Questions - Number System Class 9 Notes | EduRev
Question 4. Find the value of 'a' and 'b'
Hots Questions - Number System Class 9 Notes | EduRev
Solution:
Hots Questions - Number System Class 9 Notes | EduRev

Hots Questions - Number System Class 9 Notes | EduRev

Since, L.H.S. = R.H.S

Hots Questions - Number System Class 9 Notes | EduRev

⇒ a = 0 and b = 1
Question 5. If  Hots Questions - Number System Class 9 Notes | EduRev , then find the value of Hots Questions - Number System Class 9 Notes | EduRev

Solution:

Hots Questions - Number System Class 9 Notes | EduRev

Hots Questions - Number System Class 9 Notes | EduRev

Hots Questions - Number System Class 9 Notes | EduRev
Hots Questions - Number System Class 9 Notes | EduRev

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