Question

. For what value of k the root of equation x^2+4x+k =0 are real? *

1 point

(a) k=4

(b) k<4

(c) k>4

(d) k≤4

fast answer do​

Answer 1

k=2

then only it will be (a+b)^2 formula applicable

so answer will be

b) k<4