3. Why can the numerator and denominator of a rational expression be divided by their common factors? What conditions must be placed on the value of the variables when a rationa…

Question

asked Feb 27, 2021 182k views

1 Answer

AndreyF · Answer 1 · 2021-03-05T09:40:56+0000

Answer:

Explanation:

Hello, do you agree that for any real number a (different from 0)

(a)/(a)=1

?

5/5 = 1 for instance.

So, when you have the same common factor at the numerator and at the denominator you can eliminate it. For instance.

$(10)/(4)=(5*2)/(2*2)=(5)/(2)\cdot (2)/(2)=(5)/(2)$

You just need to be careful with 0, as dividing by 0 is not allowed.

Hope this helps

Thank you.