How can I solve a complex conjugate problem for my friend in college algebra?

[camilus]

Homework Statement

sun, I don't know why I am stuggling with a simple freakin problem. Its not even for me its for my friend who's in college algebra, but for some reaon I can't get the correct answer.

$${9 - 11i \over 6i}$$

The Attempt at a Solution

I multiplied by the conjugate twice and got -11/6 + 3i/2

 

[gabbagabbahey]

Homework Statement

sun, I don't know why I am stuggling with a simple freakin problem. Its not even for me its for my friend who's in college algebra, but for some reaon I can't get the correct answer.

$${9 - 11i \over 6i}$$

The Attempt at a Solution

I multiplied by the conjugate twice and got -11/6 + 3i/2

What is it exactly that your trying to find?

 

[camilus]

find the quotient and express your answer in standard form.

 

[tiny-tim]

$${9 - 11i \over 6i}$$

The Attempt at a Solution

I multiplied by the conjugate twice and got -11/6 + 3i/2

Hi camilus!

(you mean "I multiplied both top and bottom by the conjugate" )

-11/6 is right.

3i/2 isn't.

 

[camilus]

thanks tim, I got the answer already. its -3i/2.