Melody

If you want more explantion, always ask for it.

I mean you can say, "Thanks for the answer but can you show me how you got that please"

I like it when people ask me questions related to my answer. 

It means I actually have an audience and someone at the other end is actually trying to learn from me.

Our answers are the same.  catmg just wrote it in decimal form.

Thanks Chris,

Yep. that is ok in Australia.  Guys, used like this, includes females.   

General usage in Australia.

A guy = a male person

guys = A group of people male and/or female.  

Thanks Catmg, some working might be helpful

\(\frac{4-3i}{4+3i}\\ =\frac{4-3i}{4+3i}\times \frac{4-3i}{4-3i}\\ =\frac{16-9-24i}{16+9}\\ =\frac{7-24i}{25}\\ \)

\(\frac{1}{3} t - 5 < t - 2 \le -3t + 7\\ \frac{1}{3} t - 5 < t - 2\qquad and \qquad t - 2 \le -3t + 7\\ \frac{-2}{3} t < 3\qquad \qquad and \qquad \qquad 4 t \le 9\\ -2 t < 9\qquad \qquad and \qquad \qquad t \le 2.25\\ t > -4.5\qquad \qquad and \qquad \qquad t \le 2.25\\ -4.5\)

The Latex is not working so here is a pic of the preview:

Why do you think we should give priority to your question.

Are you more important to us than other question askers?

Skjn...:

If you think it is not correct then state why.   

I partially agree with catmg.  There are 2 different equally correct answers to this.

Do not vote a member down for trying to help you.  Instead, thank them for their time.

Catmg is a highly valued answerer here and when you insult her/him you insult all of us.

Have you drawn it?

Have you done anything to help yourself answer this?

That is a good way too.

Plus it is reassuring that we got the same answer.  

do the substitution and work it out.

x=1    and    f(1)=1

We must have exactly 1 A and exactly 1 B  the other 3 letters can be C,D,E repeats allowed, so that is 3^3=27 ways with order counting.

The other A and B must be slotted into the string.        5C2=10 places but either the A or B can go first so that is 20 places.

So I get 27*20 = 540 ways.