Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 9 Answered

If root5 + root3/root over 5-root3 = x-y root15, find X, y. (3 marks) 
Asked by Prajvalsaraff | 15 Nov, 2018, 09:23: PM
answered-by-expert Expert Answer
begin mathsize 18px style fraction numerator square root of 5 plus square root of 3 over denominator square root of 5 minus square root of 3 end fraction equals straight x minus straight y square root of 15 LHS equals fraction numerator begin display style open parentheses square root of 5 plus square root of 3 close parentheses open parentheses square root of 5 plus square root of 3 close parentheses end style over denominator begin display style open parentheses square root of 5 minus square root of 3 close parentheses open parentheses square root of 5 plus square root of 3 close parentheses end style end fraction equals fraction numerator begin display style open parentheses square root of 5 plus square root of 3 close parentheses squared end style over denominator begin display style 25 minus 9 end style end fraction equals fraction numerator begin display style 8 plus 2 square root of 15 end style over denominator begin display style 16 end style end fraction equals fraction numerator begin display style 4 plus square root of 15 end style over denominator begin display style 8 end style end fraction equals 4 over 8 plus fraction numerator square root of 15 over denominator 8 end fraction equals fraction numerator begin display style 1 end style over denominator begin display style 2 end style end fraction minus open parentheses negative fraction numerator begin display style square root of 15 end style over denominator begin display style 8 end style end fraction close parentheses comparing space we space get straight x equals fraction numerator begin display style 1 end style over denominator begin display style 2 end style end fraction straight y equals negative fraction numerator begin display style 1 end style over denominator begin display style 8 end style end fraction end style
Answered by Arun | 16 Nov, 2018, 09:27: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
ICSE 9 - Maths
Why cant we solve this using a²-b² formula
question image
Asked by saleemmohd7671 | 06 Jun, 2023, 06:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
4x+6y=15 6x-8y=14
Asked by raunakchaudhary412 | 05 Jun, 2023, 08:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
question no.11
question image
Asked by aditisingh1012010 | 05 Jun, 2023, 02:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
so that root 7 minus root 5 is in rational number using contradiction method
Asked by naitikc257 | 23 May, 2023, 03:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
(3√2-2) whole square
Asked by lateshbala20 | 08 May, 2023, 09:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
foemula for time is 
Asked by wakchaure.archana1979 | 29 Apr, 2023, 09:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Find the rate of compound interest on rupees 4000 so that it can amount to rupees 4630.50 in 3 years
Asked by uttamasingh422 | 22 Apr, 2023, 10:04: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
prove that EFGH is a parallelogram
Asked by afrah.rifah | 18 Mar, 2023, 03:14: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
(​​​​​​8a3b-4)÷(64a-9 b2)2/3
question image
Asked by rjshwrsl | 04 Mar, 2023, 12:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Pythagoras Theorem  How to solve the problem in the given picture?  
question image
Asked by mak121007abk | 25 Feb, 2023, 07:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt