Question

P + If x2 + 4x + lamda is a perfect square, then find the value of lamda ?​

Answer 1

Step-by-step explanation:

For being the perfect square, the roots are equal

So, d = b2 – 4ac = 0

So, d = b2 – 4ac = 0

⇒ d = 16 – 4 λ = 0

⇒ λ = 4