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How many real?

Algebra Level 3

The number of real roots of equation $(a^2+b^2)x^2+2a(\sqrt{b^2+c^2})x+a^2+c^2=0$ where $a,b$ and $c$ are non zero real numbers is:

2 1 4 5 0

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Excel in math and science

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by Abhay Kumar

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