Math, asked by abhinav361981, 11 months ago

pls give me solution of this question ☝​

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Answered by gojetanishq
0

Hey Mate here's your answer:

  • Given a , b , c  are in continued proportion

⇒ a : b : : b : c  ⇒  a x c =  b x b

    ac=b²            .............(1)

  • Now A/Q  a(b-c)=2b  ⇒  ab - ac -2b = 0

                                ⇒  ab - b² -2b = 0

                                ⇒  b(a - b -2) = 0

                                ⇒ a - b -2 =0    as b≠0

                               ⇒  a - b = 2        ............(2)

  • Now    to prove    a-c=2(a+b)/a 

              LHS  =  a-c  ⇒  multipying a to nr. and dr.

                            ⇒  a(a-c)/a  ⇒ a² - ac/ a ⇒ a² - b² / a 

                          ⇒ (a-b)(a+b)/a  ⇒ 2(a+b)/a         from (1) and (2)

Hence proved

Hope this helps and if it does then please mark my my answer as the Brainliest.

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