Question

Help me with this algebra 2 work

Answer 1

Given : (ai + 3)(ai - 6)

⇒ (ai)(ai) - 6(ai) + 3(ai) - 18

⇒ a²i² - 3ai - 18

We know that i² = -1

⇒ -a² - 3ai - 18

Option 3 is the Answer