12 |
m2-9 |
2 |
3-m |
2 |
m+3 |
=
12 |
(m+3)(m-3) |
-2(m+3) |
(m+3)(m-3) |
2(m-3) |
(m+3)(m-3) |
=
12-2(m+3)+2(m-3) |
(m+3)(m-3) |
=
12-2m-6+2m-6 |
(m+3)(m-3) |
=0
12 |
m2-9 |
2 |
3-m |
2 |
m+3 |
12 |
m2-9 |
2 |
3-m |
2 |
m+3 |
12 |
(m+3)(m-3) |
-2(m+3) |
(m+3)(m-3) |
2(m-3) |
(m+3)(m-3) |
12-2(m+3)+2(m-3) |
(m+3)(m-3) |
12-2m-6+2m-6 |
(m+3)(m-3) |