Asked/Added Questions From NCERT:

Question 1. Asked on :05 February 2019:05:12:59 PM

Rationalise & find value of cubic expression

If x = $\frac{1}{8 - \sqrt{60}}$ , what is the value of $x^{3} - 5 x^{2} + 8 x - 4 ?$

-Added by Harshita Rathore Mathematics » Number System

Question 2. Asked on :12 January 2019:05:55:36 PM

add √125 + 2√27 and -5√5 - √3

-Added by khushi chauhan Mathematics » Number System

Answer:

Akki chauhan

√125 +2√27 +(-5√5 -√3)

=√5×5×5 +2√3×3×3 -5√5 -√3

=5√5 +6√3 -5√5 -√3

=5√3

-Answered by Akki chauhan On 15 January 2019:09:05:29 AM

Question 3. Asked on :12 January 2019:05:54:25 PM

Rationalise the denominator = 1√3+√5+√7

-Added by Himanshi Verma Mathematics » Number System

Answer:

priyanshu kumar
Image result for Rationalise the denominator = 1√3+√5+√7

-Answered by priyanshu kumar On 17 February 2020:02:57:05 PM

Question 4. Asked on :12 January 2019:10:52:27 AM

Find the zero of 2x-5.

-Added by Akki chauhan Mathematics » Number System

Answer:

Master Purushottam

2x-5=0

2x=5

x= 5/2

-Answered by Master Purushottam On 22 August 2019:09:11:57 PM

Question 5. Asked on :09 January 2019:09:37:10 AM

Ques.1. prove that 2+2= 5

-Added by Master Purushottam Mathematics » Number System

Answer:

Nishant Verma

Start with: -20 = -20

Which is the same as: 16-36 = 25-45
Which can also be expressed as: (2+2) 2 (9 X (2+2) = 52) 9 X 5
Add 81/4 to both sides: (2+2) 2 (9 X (2+2) + 81/4 = 52) 9 X 5 + 81/4
Rearrange the terms: ({2+2}) 9/2) 2 = (5-9/2) 2
Ergo: 2+2 - 9/2 = 5
Hence: 2 + 2 = 5

-Answered by Nishant Verma On 13 October 2019:09:38:52 AM

Question 6. Asked on :09 January 2019:09:36:20 AM

What is Euclid's division algorithm.

-Added by Master Purushottam Mathematics » Number System

Answer:

Nishant Verma
The basis of the Euclidean division algorithm isEuclid's division lemma. To calculate the Highest Common Factor (HCF) of two positive integers a and b we use Euclid's division algorithm. HCF is the largest number which exactly divides two or more positive integers.

-Answered by Nishant Verma On 17 October 2019:02:37:10 PM

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