CPM Homework Help : A2C Problem 9-143

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Home > A2C > Chapter 9 > Lesson 9.3.2 > Problem 9-143

9-143.

Use the method developed in problem 9-142 to do the following division problems.

$\frac { 2 - 5 i } { 1 - 2 i }$
Step (a):
Use by the conjugate to rationalize the denominator.
$\frac{(2-5\textit{i})(1+2\textit{i})}{(1-2\textit{i})(1+2\textit{i})}$
Answer (a):
$\frac{12}{5}-\frac{1}{5}\textit{i}$

$\left(−3 + i\right) ÷ \left(2 + 3i\right)$
Hint (b):
See part (a).

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