Question

find modulus of 2-2i(absolute value)​

Answer 1

In mathematics, a complex number is a number of the form a + bi, where a and b are real numbers, and i is the imaginary number, such that i2 = -1. The absolute value of of a complex number, a + bi, is defined as the distance that a + bi is from the origin on the complex plane, and it can be found using the formula

|

a

+

b

i

|

=

√

a

2

+

b

2

|a+bi|=a2+b2

The absolute value of the complex number, 2i, is 2. We can put the complex number, 2i, in the form a + bi by letting a = 0. That is, 2i = 0 + 2i

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Answer 2

The answer is 0 because 2-2i= $\sqrt{2^2-2^2}$= $\sqrt{4-4}$= $\sqrt{0}$ or 0