kanamek kanamek

20-12-2018
Mathematics

contestada

Simplify. (1 + i)(1 - i) A) -2 B) -1 C) 0 D) 2

Respuesta :

CharlieBrown2002 CharlieBrown2002

20-12-2018

Hi there!

Answer:

D. 2

*The answer must have a positive sign.*

Step-by-step explanation:

Distributive property: a(b+c)=ab+ac

a=1, b=1

[tex]1^2+1^2[/tex]

Then, you add by the numbers from left to right.

1+1=2

Final answer is 2.

Hope this helps!

Have a nice day! :)

:D

-Charlie

Thanks!

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