Quadratic EquationHard
Question
The expression y = ax2 + bx + c has always the same sign as c if -
Options
A.4ac < b2
B.4ac > b2
C.ac < b2
D.ac > b2
More Quadratic Equation Questions
The three roots of equation $x^{4} - px^{3} + qx^{2} - rx + s = 0$, where $p,q,r,s \in R$ and $s < 0$, are $tanA,tanB...The value of m for which one of the roots of x2 − 3x + 2m = 0 is double of one of the roots of x2 − x + m = ...If roots of the equations 2x2 − 3x + 5 = 0 and ax2 + bx + 2 = 0 are reciprocals of the roots of the other then (a,...If both the roots of the equations k (6x2 + 3) + rx + 2x2 − 1= 0 and 6k (2x2 + 1) + px + 4x2 − 2 = 0 are com...Let $a,b,c$ are real numbers with $a^{2} + b^{2} + c^{2} > 0$. Then the equation $x^{2} + (a + b + c)x + \left( a^{2}...