Question

The quadratic equation 4x

2 + 4kx + 9 = 0, k > 0 has exactly one solution for x.

Find the value of k.

Answer 1

...........................

Answer 2

Answer:3

Step-by-step explanation:since the quadric equation have only one roots therefore it has equal roots so

D=b2-4ac

b=4k

a=4

c=9

D=b×b-4ac

0 =(4k×4k)-(4×4×9)

0 =16k²-144

16k²=144

k²=144/16

k=12/4

k=3