Question

How do you find the product of `10/(r-2)*(r^2-4)/2`?

Answer 1

You need to factorise the second degree polynomial

Explanation:

You have to first factorise the numerator of the second term:

`10/(r-2) * (r^2-4)/2=10/(r-2) * ((r+2) * (r-2))/2`. So, if you cancel

`(r-2)`, you have:

`10 * (r+2)/2=`5 * (r+2)