CPM Homework Help : INT2 Problem 6-45

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Home > INT2 > Chapter 6 > Lesson 6.1.4 > Problem 6-45

6-45.

If $a = 2 + 3i$ and $b = 1 - i$ , compute each of the following:

$a + b$
Step (a):
$(2 + 3i) + (1 - i)$
Combine like terms.

$a - b$
Answer (b):
$1 + 4i$
Did you remember to distribute the negative?

$ab$
Hint (c):
An area model can be used to multiply.
Remember that $i^2 = -1$ .

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