Question

cómo resuelvo la siguente operación?? (6a2-30)+(10a-15)-(6a2+6a-6)​

Answer 1

(6a2-30)+(10a-15)-(6a2+6a-6)
[6a(2)-30)]+(10a-15)-[6a(2)+6a-6]
12a-30+10a-15+[-6a(-2)-6a+6]
22a-45+12a-6a+6
22a-39+6a
28a-39