[26." If the sum of two of the roots of "],[x^(3)+px^(2)+qx+r=0" is zero then "pq=]

If the sum of the two roots of x^3 +px^2 +qx +r=0 is zero then pq=

If the sum of the two roots of x^3 +px^2 +qx +r=0 is zero then pq=

If the sum of the two roots of x^(3)+px^(2)+ax+r=0 is zero then pq=

If the sum of the two roots of x^3 + px^2 + ax + r = 0 is zero then pq=

If the sum of two roots of the equation x^3-px^2 + qx-r =0 is zero, then:

If the sum of two roots of the equation x^(3) -2px^(2)+3qx -4r=0 is zero, then the value of r is

If the sum of two roots of the equation x^(3)-px^(2)+q-r=0 is zero,then: (A) pq=r(B) pr =q (C) qr=p (D) None of these

The condition that the product of two of the roots of x^(3)+px^(2)+qx+r=0 may be -1 is