minta tolong yaa,,,buat PR besok mksih!

[tex] \frac{a - 3}{a - 2} \times \frac{ {a}^{2} - a - 2}{ {a}^{2} + a - 12} \\ = \frac{a - 3}{a - 2} \times \frac{ {a}^{2} + a - 2a - 2}{ {a}^{2} + 4a - 3a - 12} \\ = \frac{a - 3}{a - 2} \times \frac{a \times (a + 1) - 2(a + 1)}{a \times (a + 4) - 3(a + 4)} = \frac{a - 3}{a - 2} \times \frac{(a - 2) \times (a + 1)}{(a - 3) \times (a + 4)} = \frac{a + 1}{a + 4} [/tex]