(m - 2)(2m + 6) / (3m + 9)(2m - 4)
Simplify the numerators (top numbers) first.
(m - 2)(2m + 6)
2m² + 6m - 4m - 12
Add like terms.
2m² + 2m - 12
Then, do the denominators (bottom numbers)
(3m + 9)(2m - 4)
Simplify.
6m² - 12m + 18m - 36
Add like terms.
6m² + 6m - 36
Now, put those together.
tex] \frac{6m^2 - 12m - 36}{6m^2 + 6m - 36} [/tex]
Simplify everything.
(simplification showed on attachment)
1 - 2 + 1
Simplify.
-1 + 1
0
~Hope I helped!~