1.

If the sum of the roots of the equation ax2 + bx + c = 0 is equal to the sum of their squares then

A. a2 + b2 = c2
B. a2 + b2 = a + b
C. ab + b2 = 2ac
D. ab - b2 = 2ac
Answer» D. ab - b2 = 2ac


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