if the roots of the equation `x^2-bx+c=0`differ by 2 then which of the following is true

In trianglePQR, angleR = (pi)/(2) . If tan((P)/(2)) " and " tan ((Q)/(2)) are roots of equation, ax^(2) + bx + c = 0 , then which of the following is true.

Let sinalpha,cosalpha , be the roots of the equation x^2-bx+c=0 . Then which of the following statements is/are correct ?

Let sinalpha,cosalpha be the roots of the equation x^(2)-bx+c=0 .Then which of the following statements is /are correct ?

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

If the roots of the equation ax^2+bx+c=0(a!=0) be equal then

If the roots of the equation ax^(2)+bx+c=0 are equal then c=?

If the difference between the roots of ax^(2) + bx + c = 0 is 1, then which one of the following is correct ?