Ask a Doubt
Request a call back

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

CBSE Class 9 Answered

Q-8 If a,b,c are all non zero and a+b+c=0, prove that fraction numerator a squared over denominator b c end fraction plus fraction numerator begin display style b squared end style over denominator begin display style c a end style end fraction plus fraction numerator begin display style c squared end style over denominator begin display style a b end style end fraction equals 3
Asked by kishor.kp14 | 18 Jun, 2019, 10:00: AM
answered-by-expert Expert Answer
begin mathsize 16px style straight a squared over bc plus straight b squared over ca plus straight c squared over ab equals fraction numerator straight a cubed plus straight b cubed plus straight c cubed over denominator abc end fraction equals fraction numerator open parentheses straight a plus straight b plus straight c close parentheses begin display style open parentheses straight a squared plus straight b squared plus straight c squared minus ab minus bc minus ca close parentheses end style begin display style plus end style begin display style 3 end style begin display style abc end style over denominator space abc end fraction space space space space because straight a cubed plus straight b cubed plus straight c cubed equals open parentheses straight a plus straight b plus straight c close parentheses open parentheses straight a squared plus straight b squared plus straight c squared minus ab minus bc minus ca close parentheses plus 3 abc equals fraction numerator 3 abc over denominator abc end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space because straight a plus straight b plus straight c equals 0 equals 3 end style
Answered by Sneha shidid | 18 Jun, 2019, 10:06: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Maths
expand(2x+1)³
Asked by durgavenkatlakshmi1 | 20 Mar, 2024, 03:56: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
factorise: a^7+ab^6
Asked by shivalaxmi0205 | 23 Feb, 2023, 10:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
if x-2y=11 and xy=8. find the value of x³-8y³
Asked by shivalaxmi0205 | 21 Feb, 2023, 07:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
if x-1/x=3, then find value of x³-1/x³.
Asked by shivalaxmi0205 | 21 Feb, 2023, 07:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
(a+b+c)^3
Asked by kbalanbiju | 18 Jan, 2023, 07:16: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
(3x-5y+4)(9x^2+25y^2+15xy-20y+12x+16)
Asked by mmansingh949 | 21 Jun, 2022, 09:54: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
solve please
question image
Asked by iamsimanta123 | 09 Jun, 2022, 07:30: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
17. If a + b + c = 4 and a ^ 2 + b ^ 2 + c ^ 2 = 55/2 then find the value of a ^ 3 + b ^ 3 + c ^ 3 - 3abc
Asked by dalalvansh4 | 02 Jun, 2022, 07:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
factorise the following a^3+b^3+3a-3b
Asked by s1044kasturipriyambada026582 | 27 May, 2022, 12:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
I want to solve this question
question image
Asked by abilash8b | 06 Jan, 2022, 12:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×