- #1

RJLiberator

Gold Member

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Use properties to show that:

(question is in the attached picture)

Now, it is my understanding that due to properties you can express (sqrt(5)-i) as the sqrt((sqrt(5))^2+(-1)^2) which equals sqrt(6).

And (2zbar+5) can be represented as (2z+5).

But this would be sqrt(6)*(2z+5) which is NOT sqrt(3)*(2z+5)

Was there a typo in this problem? Or am I not thinking of something?

Thank you.

(question is in the attached picture)

Now, it is my understanding that due to properties you can express (sqrt(5)-i) as the sqrt((sqrt(5))^2+(-1)^2) which equals sqrt(6).

And (2zbar+5) can be represented as (2z+5).

But this would be sqrt(6)*(2z+5) which is NOT sqrt(3)*(2z+5)

Was there a typo in this problem? Or am I not thinking of something?

Thank you.