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23-09-2021
Mathematics

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Simplify each expression, if possible.
13. (2+ 5xi)(7- xi)

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surjithayer10otahza surjithayer10otahza

23-09-2021

Answer:

Step-by-step explanation:

(2+5xi)(7-xi)=2(7-xi)+5xi(7-xi)

=14-2xi+35xi-5x²i²

=14+33xi-5x²(-1)

=14+33xi+5x²

=14+5x²+33xi

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