What is the absolute value of the complex number -4- sqrt 2i? A) sqrt 14 B) 3sqrt2 C)14 D)18

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03-01-2018
Mathematics

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What is the absolute value of the complex number -4- sqrt 2i? A) sqrt 14 B) 3sqrt2 C)14 D)18

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wizard123 wizard123 · Answer 1 · 2018-01-03T21:18:34+01:00

wizard123 wizard123

03-01-2018

Remember the pythagorean theorem.

a^2 + b^2 = c^2

The complex number is a+bi, the absolute value is 'c'

[tex]|-4-\sqrt{2} i| = \sqrt{(-4)^2 + (-\sqrt{2})^2} = \sqrt{16+2} = \sqrt{18} = 3\sqrt{2}[/tex]

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baebt3 baebt3 · Answer 2 · 2021-01-03T20:01:47+01:00

baebt3 baebt3

03-01-2021

Answer:the answer is B: 3v/2

Step-by-step explanation:

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