Question

roots of ( b x^{2}+c x+a=0 ) is imaginaty

# Q.3 If the roots of the equation bx2 + cx+a=0 be imaginary, then for all real values of x, the expression 362x2 +6bex + 2c2 is - [AIEEE-2009) (A) Greater than 4 ab (B) Less than 4ab (C) Greater than-4ab (D) Less than-4ab

Solution