Question

for what values of k, the roots of the equation x²+4x+k =0 are real

Answer 1

Answer:

Step-by-step explanation:

Given equation :-  x²+4x+k =0

If the roots are real then ,

b² - 4ac = 0

4² - 4×1×k = 0

16 - 4k = 0

- 4k = -16

4k = 16

k =  16/4 = 4

∴ The value of k is 4