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If |O A^(prime)|=|AAprime|=1, then the ...

If `|O A^(prime)|=|`AA`prime|=1,` then the values of `' m '` for which `(g(x))^2+mg(x)+4=0` has two real roots which are distinct. (a)`(0,4)` (b) `(4,oo)` (c)`(4,5)` (d) `(5,oo)`

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