Question

find value of k if roots of
9x² + 3kx +4=0 are real
and equal​

Answer 1

Step-by-step explanation:

b² −4ac=0

Here, a=9,b=3k,c=4

∴(3k) ²−4×9×4=0

or 9k2=4×9×4 or k=±4

Answer 2

Answer:

the answer of this question will be like this ...