1.

Let a,b,c and d be non-zero numbers such that x=c and x=d are the roots of the equation x2+ax+b=0 and x=a and x=b are the roots of the equation x2+cx+d=0. Then the value of a+b+c+d is

Answer»

Let a,b,c and d be non-zero numbers such that x=c and x=d are the roots of the equation x2+ax+b=0 and x=a and x=b are the roots of the equation x2+cx+d=0. Then the value of a+b+c+d is



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