1.

The condition of being one root of the equations ax2 + bx + c = 0 and a'x2 + b'x + c' = 0 common is:

A. (ca' - ac')2 = (ab' - ba')
B. (ca' - ac')2 = (bc' - cb')
C. (ca' - ac')2 = a(bc' - cb')
D. (ca' - ac')2 = (ab' - ba') (bc' - cb')
Answer» E.


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