Question

Write the product in standard form.
( 7 + 7i)( 6 + 7i)

Answer 1

( 7 + 7i)( 6 + 7i)
42+49i+42i+49i^2
49i^2+91i+42

Answer 2

remember than i^2 = -1 . must be simplified

Answer 3

Use distributive law
(a+b) (c+d) =ac+ad+bc+bd)
here a=7, b=7i=d ,c=6

So the solution will be 7*6+7*7i+6*7i+7i*7i
=42+49i+42i+49*i^2
(Since i^2= -1) we have
=42+91i-49
=(-7+91i) will be the Answer

Answer 4

Really @Anu2401 ??? :o

Answer 5

@Anu2401 Thank you!