39is the answer -8?
justw rite the relation between the roots and u ahve got 4 equations in 4 unknowns. try and solve them
kindly check if my answer is correct or not
(1) If c,d are the roots of the equation x2+ax+b=0 and a,b are the roots of the equation x2+cx+d=0 then find the value of a+2b+3c+4d =
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4 Answers
39
341a+b=-c; c+d = -a \Rightarrow b=d
Further ab=d; cd=b
b=d=0 \Rightarrow a=-c which gives infinitely many values for the expression.
Otherwise a=b=1 and c=d=-2 and the expression evaluates to -5