Question

find the value of k for which the quadratic equation kx square minus 2 root 5 x + 4 is equal to has equal roots​

Answer 1

,c=4Given kx2 – 2√5x + 4 = 0 has equal roots Hence b2 – 4ac = 0 That is (– 2√5)2 – 4(k)(4) = 0 20 – 16k = 0 ∴ k = 5/4