6.
Find the value (s) of k for which the given
quadratic equations has real and equal roots:
kx (x – 2√5)+ 10 = 0​

1 thought on “6.<br />Find the value (s) of k for which the given<br />quadratic equations has real and equal roots:<br />kx (x – 2√5)+ 10 = 0​”

1. Answer:

   kx(x-2sq.root 5) +10 = 0

   kx2-2sq.root5 kx +10 = 0

   b2 -4ac = (-2 sq.root 5k)2 -4(k)(10) >0

   = 20k2 -40k >0

   4 k(5k-10) >0

   20k(k-2)>0

   k>0 , k>2

   Reply