Answer:
Standard form is 9(2i-3) or (-27+18i)
Step-by-step explanation:
To solve these type of question we should always keep in mind that i= √(-1)
and i² = (-1)
We have to solve the given form 9i(2+3i).
Now we start solving the question by simplifying the factors
9i(2+3i) = 18i+27i²
⇒ 18i +27(√-1)²
⇒18i +27(-1)
⇒18i-27
⇒9(2i-3)
So the simplified for is 9(2i-3) or (-27+18i)
