14. If the quadratic equation (1+m^2) x^2+2mcx+c^2-a^2=0 has real roots, prove that c^2=a^2(1+m^2).

Er Chandra Bhushan
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 Solution:- 

14. If the quadratic equation (1+m^2) x^2+2mcx+c^2-a^2=0 has real roots, prove that  c^2=a^2(1+m^2).

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