Solved

$| a + b i | =$ __________
A) $a + b$

Question 7

Multiple Choice

$| a + b i | =$ __________

A) $a + b$
B) $\sqrt { a + b }$
C) $\sqrt { a ^ { 2 } - b ^ { 2 } }$
D) $\sqrt { a - b }$
E) $\sqrt { a ^ { 2 } + b ^ { 2 } }$

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