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All values of m for which both roots of the equation x2-2mx+m2-1=0 are greater than -2 and less than 4, lie in the interval.

DASARI NAGESWARA RAO , 6 Years ago
Grade 12th pass
anser 1 Answers
Arun

Last Activity: 6 Years ago

Dear student
 
using the quadratic formula you see that x = [ 2m ±2 ] / 2 or x = m ±1....x in ( - 2 , 4 ) means m in ( - 1 , 3 )
 
hence option A is correct

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