Question of the Day (30Jul20)


00 : 00 If three times the sum of the roots of the quadratic equation x^{2} − (K + 5)x + 3(2K + 1) = 0 is equal to the product of the roots of the equation, then for what value of m and n does the equation x^{4} − Kx^{3} + mx^{2} + nx + 1 = 0 have four positive roots?
