JEE Math Practice Question
If the roots of the equation $$b{x^2} + cx + a = 0$$ imaginary, then for all real values of $$x$$, the expression $$3{b^2}{x^2} + 6bcx + 2{c^2}$$ is :
- A.less than $$4ab$$
- B.greater than $$-4ab$$
- C.less than $$-4ab$$
- D.greater than $$4ab$$
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