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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

Paragraph: **** Let f(x) = ax^2 + bx + c, a 0 , such that f(-1-x) = f(-1+x) x R . Also given that f(x) = 0 has no real roots and 4a + b > 0 . Sum of the roots of f(x) is equal to :

Options

A15
B-15
C21
Dcan't be determine

Correct answer

A. 15

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