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Hi! m a student of B.Sc(maths honours) 3rd year. I want 5 previous years entrance exams question set with answers for preparation plss mail it to my gmail Id. "deepika.ds099@gmail.com"

Originally Posted by deepika.ds099@gmail.com

Hi! m a student of B.Sc(maths honours) 3rd year. I want 5 previous years entrance exams question set with answers for preparation plss mail it to my gmail Id. "deepika.ds099@gmail.com"

If a ,b and c are the roots of x3 +ax2+bx +c=0 then the value of a2+b2+c2 is what

Originally Posted by Unregistered

If a ,b and c are the roots of x3 +ax2+bx +c=0 then the value of a2+b2+c2 is what

Here,
a+b+c=-a
ab+bc+ca=b
abc=-c
Then,
a^2+b^2+c^2=(a+b+c)^2-2 (ab+bc+ca)
=a^2-2b

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