Question

Please answer it fast. ​

Answer 1

$z_{1} = 4 + 7i$

$z_{2} = 1 - i$

$z_{1} + \lambda z_{1} = 4 + 7i + \lambda - \lambda i$

If λ ∈ ℝ

$Im( z_{1} + \lambda z_{2}) = 7- \lambda = 0$

$\implies \boxed { \lambda = 7}$

Answer 2

Answer:

x= 7 is the Answer

Step-by-step explanation:

x = 7

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