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Question

Let f(x) = ax2+bx+c,a>0 such that f(1x)=f(1+x) x ε R. Also given that f(x) = 0 has no real roots and b > O
Let p = b - 4a, q = 2a + b, then pq is

A
negative
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B
positive
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C
Cannot be determined.
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