All the values of $m$ for which both roots of the equation ${x^2} - 2mx + {m^2} - 1 = 0$ are greater than $ - 2$ but less then 4, lie in the interval - DASH

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Question

All the values of $m$ for which both roots of the equation ${x^2} - 2mx + {m^2} - 1 = 0$ are greater than $ - 2$ but less then 4, lie in the interval

$ - 2 < m < 0$

$m > 3$

$ - 1 < m < 3$

$1 < m < 4$

Solution

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