The answer would be D. :>
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
Answer:
????????????????????
slope = (y2-y1)/(x2-x1)
= (3-1)/(6-3)
m=2/3
Answer: slope=2/3