Question

For what value of k roots of yhe ewuation ate real ...X2+4x+k

Answer 1

HEYA MATE..

compare x² + 4x + k =0

with ax² + bx + c = 0

a = 1 , b = 4 , c = k

It is given that roots are distinct and real ,

discreaminant ≥ 0

b² - 4ac ≥ 0

4² - 4 × 1 × k ≥ 0

- 4k ≥ - 16

4k ≤ 16

k ≤ 16/4

k ≤ 4

HOPE IT WILL HELP YOU...