Again, the book has confused me. What on Earth have they done?
I got a bit further on, and I've got the same answer they reached doing this, except I don't know where their 1/2 went. Theirs doesn't have it and mine does.
Hi !
Ok, we have :
Let , so we have :
What is the common denominator ?
In one side, we have 3k and in the other side, 3.
So the common denominator is
To make such a thing, we will have to multiply the fraction on the right side by so that we will have 3k at the bottom.
But what is ?
A rule of exponents tells us :
Therefore
--->
Is it clear enough ? :x
:O It makes sense! That's phenomenal.
It's like if you were to do:
2/10 + 1/5
You would end up with:
2/10 + 2/10, to get a common denominator...And then you get 4/10. It's just a coincidence that the 1/2 power cancels out and all, and it caused it to slip my mind :P
BUT, there is one thing left unexplained. The pi symbol that becomes negative. Do you know why that is?
Forgive me, I don't quite know how to use the math symbols.
:O It makes sense! That's phenomenal.
It's like if you were to do:
2/10 + 1/5
You would end up with:
2/10 + 2/10, to get a common denominator...And then you get 4/10. It's just a coincidence that the 1/2 power cancels out and all, and it caused it to slip my mind :P
NopeBUT, there is one thing left unexplained. The pi symbol that becomes negative. Do you know why that is?
Mistake ?
Well, it's still understandable ^^Forgive me, I don't quite know how to use the math symbols.
But you can try learning how to use the latex in this section : http://www.mathhelpforum.com/math-help/latex-help/