If a,b,c,d in R-{0} , such that a,b are ...

If `a,b,c,d in R-{0}` , such that `a,b` are the roots of equation `x^(2)+cx+d=0` and `c,d` are the roots of equation `x^(2)+ax+b=0,` then `|a|+|b|+|c|+|d|` is equal to

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