Question

Can someone explain this to me? Multiply and Divide rational expressions.

Answer 1

Im confused by the greatest common factor part.

Answer 2

Forget about what's written. You know how to dance terms ?

Answer 3

What? O.o

Answer 4

Lol , cancel terms I mean

Answer 5

Um yeah

Answer 6

Powers in the denominator and numerator cancels each other. If we have common factors, the powers in the numerator - powers in the denominator gives you simplified form

Answer 7

The problem now is to find these common factors, well you can't tell that you have or don't have common factors unless you factor all the expression to the prime factors, like x^2-1 =(x-1)(x+1)

Answer 8

Um what? O.o I just want to know how the example got x^6 and x^8 is x^6 and same for y

Answer 9

I told what's written is confusing, it's trying to say that x^8=x^6*x^2, so x^8/x^6= x^2

Answer 10

Basically, we express this procedure by saying power of the numerator-power of the denominator

Answer 11

Yes 8-6=2 .. But that not what the answer is showing

Answer 12

The answer is not in the simplified form. He was writing the similar terms in top of each other, so that he can cancel them easily

Answer 13

Um okay.. Then y is 1?

Answer 14

The expression will develop to simple form, 95% percent you will NOT get a number, just x and y

Answer 15

Um okay? So whats the final answer?

Answer 16

In our case, it's ((x-6)*y)/x^2

Answer 17

Okay.. For the problem im working on-- x^4-x^5=? y^6-y^5=?

x=-1
y=1

Answer 18

The original problem is ---

Multiply-
x^3-64/ x^5y^5 * x^4y^6/x^2+4x+16

Answer 19

The final form is (x-4)*y/x, I followed exactly the same procedure, now just the numbers..

Answer 20

Okay.. So I just ignore that is a negative?

Answer 21

Don't ignore anything
\[((-1)-4)*1/(-1)=?\]