Question and Answers Forum

All Questions      Topic List

Algebra Questions

Previous in All Question      Next in All Question      

Previous in Algebra      Next in Algebra      

Question Number 34357 by math1967 last updated on 05/May/18

If a+b+c=0 prove that i)((a/(b+c))+ (b/(c+a)) +(c/(a+b)))(((b+c)/a) +((c+a)/b) +((a+b)/c))=9 ii)((a/(b−c)) +(b/(c−a)) +(c/(a−b)))(((b−c)/a) +((c−a)/b) +((a−b)/c))=9

Ifa+b+c=0provethati)(ab+c+bc+a+ca+b)(b+ca+c+ab+a+bc)=9ii)(ab−c+bc−a+ca−b)(b−ca+c−ab+a−bc)=9

Answered by tanmay.chaudhury50@gmail.com last updated on 05/May/18

i){((a/(b+c))+1−1)+((b/(c+a))+1−1)+((c/(a+b))+1−1)}× {(((b+c)/a)+1−1)+(((c+a)/b)+1−1)+(((a+b)/c)+1−1)} ={(((a+b+c)/(b+c))−1)+(((a+b+c)/(c+a))−1)+(((a+b+c)/(a+b))−1)}× {(((a+b+c)/a)−1)+(((a+b+c)/b)−1)+(((a+b+c)/c)−1)} =given a+b+c=0 so =(−3)×(−3)=9

i){(ab+c+1−1)+(bc+a+1−1)+(ca+b+1−1)}×{(b+ca+1−1)+(c+ab+1−1)+(a+bc+1−1)}={(a+b+cb+c−1)+(a+b+cc+a−1)+(a+b+ca+b−1)}×{(a+b+ca−1)+(a+b+cb−1)+(a+b+cc−1)}=givena+b+c=0so=(−3)×(−3)=9

Terms of Service

Privacy Policy

Contact: info@tinkutara.com