27.If the roots of the equation9x.kx +16-0 are equal then the value of – InterviewSolution

1.	27.If the roots of the equation9x.kx +16-0 are equal then the value of k is-a) ±24, b) t 16, c) ±12, d)±18
Answer» condition for equal rootsb²-4ac=0or D=0k^2-576= 0k= √576k= 24

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