tolong di buat caranya

[tex] \frac{ {a}^{2} }{a - 2} \times \frac{ {a}^{2} + 4a - 12 }{2a } [/tex]
[tex] \frac{ {a}^{2} }{a - 2} \times \frac{(a - 2 ) (a + 6)}{2a} [/tex]
[tex] \frac{a(a + 6)}{2} = \frac{ {a}^{2} + 6a}{2} [/tex]