What is expand (x-(3i+1))(x-(1-3i)) ?

The solution to expand (x-(3i+1))(x-(1-3i)) is x^2-2x+10

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expand (x-(3i+1))(x-(1-3i))

expand

(x - (3 i + 1)) (x - (1 - 3 i))

x^{2} - 2 x + 10

Solution steps

(x - (3 i + 1)) (x - (1 - 3 i))

Apply FOIL method

(x - (3 i + 1)) (x - (1 - 3 i)) : x^{2} - 2 x + 10

= x^{2} - 2 x + 10

sin (4 (t - w))

s \cdot (1 + \frac{s}{3}) (1 + \frac{s}{20})

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What is expand (x-(3i+1))(x-(1-3i)) ?
The solution to expand (x-(3i+1))(x-(1-3i)) is x^2-2x+10