\"\"

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The expression is \"\".

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The FOIL method can be used to multiply the complex numbers.

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Foil method: the product of two binomials is the sum of the products of the First terms, the Outer terms, the Inner terms and the Last terms. 

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The word FOIL is an acronym for the four terms of the product.

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\"\"\"\"

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Multiply the complex numbers using FOIL method

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\"\" \ \ \"\"       (Multiply: \"\")

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\"\"                      (Multiply: \"\")

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\"\"                                      (Additive inverse property: \"\")\"\"

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\"\"                      (Substitute the imaginary unit value i = -1)

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= 9 + 1                              (Product of two same signs is positive)

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= 10                                  (Add: 9 + 1 = 10)\"\"

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The simplified expression is 10.