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  • 16-08-2022
  • Mathematics
contestada

What is the product of (2i) and (5+3i)?
Group of answer choices

-6 + 10i

10 + 6i

16i

10 - 6i

Respuesta :

cygnusabc00
cygnusabc00 cygnusabc00
  • 16-08-2022

Answer

-6 + 10i

Step-by-step explanation:

Greetings !

Write the expression in product form

[tex]2i \times (5 + 3i)[/tex]

Apply distributive law a(b+c)=ab+ac

[tex]2i5 + 2i3i[/tex]

Multiply the numbers

  • 2.5=10
  • =10i

Multiply the numbers

  • 2.3=6

Apply exponent rule aa=a²

[tex]ii = i {}^{2} \\ = 6i {}^{2} [/tex]

Apply imaginary number rule i²=-1

=6(-1)=-6

[tex] = 10i - 6[/tex]

Rewrite in standard complex form:

[tex] - 6 + 10i[/tex]

Hope it helps!

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