Get premium membership and access questions with answers, video lessons as well as revision papers.
5(4) + 5(6i) + 4(3i) + (3i)(6i)
= 20 + 30i + 12i + 18i2
= 20 + 42i + 18(-1)
= 20 + 42i - 18
= 2 + 42i
sharon kalunda answered the question on May 2, 2019 at 06:07