Question

for what value of k the roots of quadratic equation K square + 4 x + 1 are equal and real

Answer 1

Answer:

Step-by-step explanation:

√d= b^2-4ac=0

Here b= 4, a=k, c=1

So..

(4)^2 - 4×k×1=0

16- 4k = 0

-4k = -16 (cut the minus sign with each other)

4k = 16

K= 16/4

K= 4