1.

If the quadratic equation (a2 - b2) x2 + (b2 - c2) x + c2 - a2 = 0 has equal roots, then which of the following is true:

A. b2 = c2 + 2a2
B. b2 + c2 = 2a2
C. b2 - c2 = 2a2
D. b2 + c2 = a2
Answer» C. b2 - c2 = 2a2


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