Question

pls tell me fast
I will mark the best answer as brainliest ​

Answer 1

(a+b)^2=a^2+2ab+b^2

ATQ=> a=x, 2ab=4x

=>2ab=4x

=>2bx=4x

=>2b=4

=>b=4/2=>2

ATQ=>λ=b^2

:.λ=2^2=>4