If z_1 = 2 - i and z_2 = 1 + i, then value of | z_1 + z_2 + 1 z_1 - z_2 + 1 | is

MHT CET Mathematics question

If and , then value of is

Answer: (C)

and . \dfrac{4}{2-2i}$| =

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Question ID VK-027729