Question

Find the absolute value of the complex number:

-7-i√11

Answer 1

the absolute value is the length of the hypotenuse

Answer 2

So I have to do the Pythagorean theorem?

Answer 3

yes!

Answer 4

A^2 = (-7)^2 + (-√11)^2

A = √( (-7)^2 + (-√11)^2 )

Answer 5

So it would be:

A = √(49+11)
A = 2√15

Or is it subtracting?

Answer 6

that's right!

Answer 7

Oh!! Thank you so much!!!

Answer 8

the squares mean that the negative signs all go away