For what value of k are the roots of the quadratic equation kx (x+ 3) - 4=0 equal?
kx^2 + 3kx -4 = 0 for equal roots, the disciminant of the Quadratic Formula must = 0
b^2 - 4ac
9k^2 - 4(k)(-4) = 0
9k^2 +16k = 0
k = -16 /9 or 0 (throw out)
+36916 
