Question

which following is[5-6i]
a.iroot 6i
b. root 11
c.root 61
d.root 11i

Answer 1

option c

Answer 2

\[\left| 5-6i \right|=\sqrt{5^2+6^2}=\sqrt{61}\]

Answer 3

this does mean absolute value yes?

Answer 4

yeah

Answer 5

then saubhik wrote it exactly right.

Answer 6

it is just
\[\sqrt{a^2+b^2}\] don't think about the i or the - sign. just square, add, take the square root

Answer 7

ok thanks;)