Mark the Correct alternative in the following:

If where z = 1 + 2i, then |f(z)| is

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The value of (1 + i)⁴ + (1 – i)⁴ is

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If z = a + ib lies in third quadrant, then also lies in the third quadrant if

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A real value of x satisfies the equation if a² + b² =

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The complex number z which satisfies the condition lies on