please give me the answer of the question given to the picture
please give me the answer of the question given to the picture
sayan chakraborty , 4 Years ago
Grade 10
10 grade maths> please give me the answer of the question...
1 AnswersAvishek Bhagat
Last Activity: 4 Years ago
Dear Student,
the solution to your query is:-
b2+c2-a2
=>(b+c)2–2bc-a2 [(b+c)2=b2+c+2bc]
=>(b+c+a)(b+c-a)-2bc[a2-b2=(a+b)(a-b)]
=>b2+c2-a2= -2bc[ a+b+c=0]
Similarly, we can prove
a2+c2-b2=-2ac
a2+b2-c2=-2ab
Putting the above values in given equation
=>1/2(-1/bc-1/ca-1/ab)
=>-1(a+b+c)/2abc[a+b+c=0]
=>0
askIITians Expert
Yuvraj Singh
the solution to your query is:-
b2+c2-a2
=>(b+c)2–2bc-a2 [(b+c)2=b2+c+2bc]
=>(b+c+a)(b+c-a)-2bc[a2-b2=(a+b)(a-b)]
=>b2+c2-a2= -2bc[ a+b+c=0]
Similarly, we can prove
a2+c2-b2=-2ac
a2+b2-c2=-2ab
Putting the above values in given equation
=>1/2(-1/bc-1/ca-1/ab)
=>-1(a+b+c)/2abc[a+b+c=0]
=>0
askIITians Expert
Yuvraj Singh
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