What is the solution?

[Frankenstein143]

Can somebody write a complete solution of a,b and c?
For a) I have z+w and zw. But I dont know whether this is complete or not

 

[nasi112]

It is complete, but it is better to simplify your answer.

[MATH]\frac{2}{\sqrt{5}} + \frac{3}{2} = \ ?[/MATH]

 

[Frankenstein143]

Is 2*√5/5 +3/2
Unfortunately, I do not have enough time to solve these problems alone. (it is homework and I*m run of time).
If someone can, please write a complete solution for a), b) and c)
Of course, I will think more about these problems in the next days, but now I´m run of time

 

[nasi112]

Nice try, but the correct simplification is

[MATH]\frac{2}{\sqrt{5}} + \frac{3}{2} = \frac{4\sqrt{5} + 15}{10}[/MATH]
If you will follow with me, we will together solve all of them, although, we prefer that you post one question per thread.

Now, let us solve the next one.

[MATH]zw = \ ?[/MATH]