The value of \lambda for which (x^2 + 4x + \lambda) is a perfect square, is... | MCQ 1m | Maths | SuperPadhai

Quadratic Equations > Question

MCQ1 markYear: 2020EasyCBSE Class 10

quadratic-equationsperfect-square

Question

The value of

λ

for which

(x^{2} + 4 x + λ)

is a perfect square, is

Solution

1

For perfect square:

x^{2} + 4 x + λ = (x + 2)^{2} \Rightarrow λ = 4

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