How do you multiply #(3m^2-12m)div(m^2-4m)/(m^2-6m+8)#?
Let's factorise everything we've got:
When we are dividing fractions, we can multiply by the reciprocal of the second fraction, so our expression really is
Let's factorise everything we can:
Now, let's see what cancels out, meaning what has the same factor in the numerator as the denominator
Now let's multiply the fractions. Remember, it's straight across!