CPM Homework Help : INT2 Problem 5-131

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Home > INT2 > Chapter Ch5 > Lesson 5.2.6 > Problem 5-131

5-131.

Rewrite each expression below.

$\sqrt { - 49 }$
Step (a):
$\sqrt{-1}\sqrt{49}$
Answer (a):
$7i$

$\sqrt { - 2 }$
Answer (b):
$i\sqrt{2}$

$(4i)^2$
Step 1 (c):
$(4i)(4i)$
Step 2 (c):
$16i^2$
Answer (c):
$-16$

$3i + 2i - 5$
Answer (d):
$5i-5$

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