How do you find $abs( -7 + 5i )$ ?

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Answer 1 · 2016-10-01T18:33:18

The magnitude of any complex number of the form $a + bi$ is $sqrt(a² + b²)$ In this case $|-7 + 5i| = sqrt74$

$|-7 + 5i| = sqrt(-7² + 5²) = sqrt(49 + 25) = sqrt74$

How do you find abs( -7 + 5i )abs( -7 + 5i )?