If the roots of `ax^(2)+bx+c=0` are real and equal then ………….. A)`b^(2)-4ac lt 0` B)`b^(2)-4ac=0` C)`b^(2)-4ac gt 0` D)cannot say

If the roots of ax^2+bx+c=0 are real and equal then.......a) b^2-4aclt0 b) b^2-4ac=0 c) b^2-4acgt0 d) Cannot say

The roots of ax^(2)+bx+c=0, ane0 are real and unequal, if (b^(2)-4ac)

If alpha and beta are roots of ax^(2)+bx+c=0 ,and roots differ by k then b^(2)-4ac=

If 'alpha and beta are roots of ax^(2)+bx+c=0 ,and roots differ by k then b^(2)-4ac=

If the roots of ax^(2) + bx + c are alpha,beta and the roots of Ax^(2) + Bx + C=0 are alpha- K,beta-K , then (B^(2) - 4AC)/(b^(2) - 4ac) is equal to -

If the roots of the equation ax^2+bx+c=0 (a!=0) are reciprocal to each other then a) a=b b) a=c c) b=c d) b^2=4ac

If the roots of the equation ax^2+bx+c=0 differ by K then b^(2)-4ac=

If a,b,c are real numbers such that c(a+b+c)<0, then b^(2)-4ac is

If the roots of the equation ax^2+bx+c=0 are in the ratio 3:4 show that 12b^2=49ac .

If b^(2)gt4ac then roots of equation ax^(4)+bx^(2)+c=0 are all real & distinct if :