(1+m²)x² + 2mcx +(c²-a²)=0 If the root of these equation are equal. Prove that c²=a²(1+m²)

(1+m²)x² + 2mcx +(c²-a²)=0 If the root of these equation are equal

1.	(1+m²)x² + 2mcx +(c²-a²)=0 If the root of these equation are equal. Prove that c²=a²(1+m²)
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