Question

6 question number solve ​

Answer 1

Answer: for a equal roots b^2-4ac>=0

so 36k^2-36*4>=0

k=+2,-2

Answer 2

Answer:

If roots are equal then b²-4ac=0

9x²+6kx+4=0

a=9 , b=6k , c=4

b²-4ac=0

(6k)²-4×9×4=0

36k²-144=0

36k²=144

k²=144/36

k²=4

k=+or-2