Question

for what value of k, x square + 4 x + K is a perfect square​

Answer 1

Answer:

hit and trail

Step-by-step explanation:

k=4

x^2+4x+4=(X+2)^2

Answer 2

Answer:

b2-4ac=0

put the value.

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

4ka square-4×1×k=0

16-4k=0

16=4k

16/4=0

4=0