Class 9 Maths Chapter 1 | Number System Solutions | Exercise 1.4 Q1 to Q5

[@SangitaDevi-ef7ox]

Question no. 5 (iv) Dividing and multiplying by √7 + 2, we get
1/(√7 - 2) = [1/(√7 - 2)] × (√7 + 2)/(√7 + 2)
Using identity (a + b)(a - b) = (a² - b²)
= (√7 + 2) / (√7)² - (2)²
= (√7 + 2) / (7 - 4)
= (√7 + 2) / 3

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{UT-I} [MATHS]
CHAPTER=(Introduction to Euclid's Geometry):(Lines & Angles):(Coordinate Geometry):(Area of Triangles by Heron's formula).
{H.Y.} [MATHS] CHAPTER=(Number System):(Real Number): (Polynomials):(Introduction to Euclid's Geometry):(Lines & Angles):(Triangles):(Coordinate Geometry):(Area of Triangles by Heron's formula):(Statistics).
{UT-II} [MATHS] CHAPTER=(Linear Equations in Two Variables):(Surface Areas & Volumes):(Statistics & Probability).
{ANNUAL} [MATHS] CHAPTER=(Real Number): (Polynomials):(Introduction to Euclid's Geometry):(Lines & Angles):(Triangles):(Coordinate Geometry):(Area of Triangles by Heron's formula):(Linear Equations in Two Variables):(Quadrilaterals):(Circles):(Mensuration):(Surface Areas & Volumes):(Statistics & Probability):(Statistics):(At least 5 activities).

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Sir the answer of the last question is. √7+2/3 is it correct sir.

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Home work
@mdsirclass9
Answer :- √7+√2 by 3 (ans) sir right or wrong❤

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Sir answer hoga √7+2/3 answer

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Sir question 5 ka 4 number ka answer u√7 + 2 /3 hoga am i right sir??❤

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Thanku Sir ap bht aacha samjaye hai. Iska answer ha..root 7+2/3

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Answers of 5)iv) √7+√2/3

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Ans is root 7+2
-------
3

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Pura number system apse hi hua
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[@anuradhakumari-vn9ns]

Sir question no 3 ka ye answer nahi ho sakta hai?
π=c/d
When we major a line which scale get approximate value on the other hard decimal expansion of c/d is neither terminating or repeating
Here, π is irrational
👇🏻

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24:42 answer = √7 + 2/3

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Ans 3 ...❤......

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Root 7+2/3

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√7+2 /3 ans

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Root 7 - 2 upon 5

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√7+2/3 answer of 4 number

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under rout7+2 upon 5 is the right answer
..

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0:30
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Sir ans: √7+2/3

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Answer-√7+2/3

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Tq❤