How do you simplify x5/9 Times x1/3? Help!

Question

samanthalaclair · Answer

also i need help simplifying 4 over 2-5i

karleighxxvictoria · Answer

its 2-5i

samanthalaclair · Answer

thats what i said but my teacher claimed there was more to it -_- , thank god I'm not the only one!

karleighxxvictoria · Answer

lol sometimes teachers are VERY VERY wrong!

samanthalaclair · Answer

do you know the answer to the first question i asked?

karleighxxvictoria · Answer

no sorry

mathstudent55 · Answer

By "x5/9 Times x1/3"

do you mean

$\Large x^{\frac{5} {9}} \times x^{\frac{1} {3}} $   ?

If so, when you multiply powers with the same base, add the exponents.
Keep in mind that 5/9 and 1/3 have different denominators, so you need a common denominator. In this case use 9 as the LCD.

For the second problem, you do it depending on what the problem is.

You wrote "4 over 2-5i".

Do you mean $\dfrac{4}{2} - 5i$

or do you mean

$\dfrac{4}{2 - 5i} $   ?

If you meant $\dfrac{4}{2} - 5i$, then the answer is $2 - 5i$.

If your teacher told you it's wrong and it's more complicated than that, then you probably mean the second possibility:

$\dfrac{4}{2 - 5i} $ 

Now you need to use a complex conjugate to simplify the fraction.

The complex conjugate of 2 - 5i is 2 + 5i, so multiply 
the numerator and denominator by 5 + 2i.

studybuddy26 · Answer

How is any of this high school math ? I took all this stuff in middle school. Also including Geometry 1.