The set of possible of a for which \[ x^{2}-\left(a^{2}-5 a+5\right) x+\left(2 a^{2}-3 a-4\right...
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0The set of possible of a for which
\[
x^{2}-\left(a^{2}-5 a+5\right) x+\left(2 a^{2}-3 a-4\right)=0
\]
has roots whose sum and product are both less than 1
(A) \( (-1,5 / 2) \)
(B) \( (1,4 \)
(C) \( [1,5 / 2] \)
(D) \( (1,5 / 2) \)
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