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CBSE Class 10 Answered

Please solve the question 
question image
Asked by vikasg13.hardware | 22 Jun, 2018, 10:03: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight a plus straight b plus straight c equals 0
straight a equals negative straight b minus straight c
Multiplying space by space straight c space on space both space side
ac equals negative bc minus straight c squared
Consider comma
2 straight b squared plus ca equals straight b squared minus straight c squared plus straight b squared minus bc
space space space space space space space space space space space space space space space space equals space left parenthesis straight b plus straight c right parenthesis left parenthesis straight b minus straight c right parenthesis plus straight b left parenthesis straight b minus straight c right parenthesis
space space space space space space space space space space space space space space space space equals left parenthesis straight b minus straight c right parenthesis left parenthesis straight b plus straight c plus straight b right parenthesis
space space space space space space space space space space space space space space space space equals left parenthesis straight b minus straight c right parenthesis left parenthesis negative straight a plus straight b right parenthesis
space space space space space space space space space space space space space space space space space equals negative left parenthesis straight b minus straight c right parenthesis left parenthesis straight a minus straight b right parenthesis
Similarly space you space can space solve space it space for
2 straight a squared plus bc equals negative left parenthesis straight a minus straight b right parenthesis left parenthesis straight c minus straight a right parenthesis space and space 2 straight c squared plus ab equals negative left parenthesis straight c minus straight a right parenthesis left parenthesis straight b minus straight c right parenthesis
Put space it space in space LHS space and space simplifying space we space get
straight P equals fraction numerator straight a squared over denominator 2 straight a squared plus bc end fraction plus fraction numerator straight b squared over denominator 2 straight b squared plus ac end fraction plus fraction numerator straight c squared over denominator 2 straight c squared plus ab end fraction equals 1 end style
Answered by Sneha shidid | 25 Jun, 2018, 11:11: AM
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