Ask a Doubt
Request a call back

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

CBSE Class 10 Answered

whether 2under root 45/ 2 underoot 5 + 3 underroot 20 / 2 underoot 5 on simplification gives a rational or an irrational number
question image
Asked by rusuishika | 16 Jan, 2021, 23:04: PM
answered-by-expert Expert Answer
begin mathsize 16px style fraction numerator 2 square root of 45 over denominator 2 square root of 5 end fraction plus fraction numerator 3 square root of 20 over denominator 2 square root of 5 end fraction equals fraction numerator 2 square root of 9 cross times 5 end root over denominator 2 square root of 5 end fraction plus fraction numerator 3 square root of 4 cross times 5 end root over denominator 2 square root of 5 end fraction equals fraction numerator 2 cross times 3 square root of 5 over denominator 2 square root of 5 end fraction plus fraction numerator 3 cross times 2 square root of 5 over denominator 2 square root of 5 end fraction equals fraction numerator 6 square root of 5 plus 6 square root of 5 over denominator 2 square root of 5 end fraction equals fraction numerator 12 square root of 5 over denominator 2 square root of 5 end fraction equals 6 So comma space fraction numerator 2 square root of 45 over denominator 2 square root of 5 end fraction plus fraction numerator 3 square root of 20 over denominator 2 square root of 5 end fraction space on space simplification space gives space straight a space rational space number. end style
Answered by Yasmeen Khan | 18 Jan, 2021, 13:48: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
prove that 7root 5 is irrational
Asked by srasheeda771 | 29 Jun, 2024, 08:33: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
What is the LCM of 234 and 877
Asked by boralpritam188 | 12 Jun, 2024, 15:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
5th q
question image
Asked by tanishkagurung | 11 Jun, 2024, 11:38: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Two alarm clocks ring their alarms at regular intervals of 50 sec. and 48 sec. If they first beep together at 12 noon at what time will they beep again for the first time
Asked by sanyamkhurana819 | 06 Jun, 2024, 17:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
multiply 8 root 15 by 2 root 3
Asked by bhumikabhardwaj2204 | 02 Jun, 2024, 05:56: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
If n is a natural number, then 2(5n+6n)always ends with
Asked by pimpleroshan2009 | 24 May, 2024, 13:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
express 15.265 in p/q form?
Asked by nagalaxmidurgarao937 | 08 Apr, 2024, 13:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
if a,b,c are rational such that a+b?2+c?3=0 then a+b+c=
Asked by reddyjaswamth | 10 Jan, 2024, 13:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
what per cent of 2/9 is 1/3
Asked by pv925403 | 07 Jan, 2024, 19:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
solution
question image
Asked by meelunaresh | 02 Jan, 2024, 10:09: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Are You a Teacher or a Parent Seeking Customised Tests? Click here
×