Question

Add the complex expressions, and simplify
(4+7.9i)+(5+7.3i) can someone help me with this

Answer 1

You add the "real" numbers with their imaginary; so it is 9 +15.2i

Answer 2

(4+7.9i)+(5+7.3i) = (4+5) + (7.9+7.3)i = 9 + 15.2i

Answer 3

Short answer: Simplify the following expression; express in terms of i.
square root of -25

Answer 4

can someone please please help me with this

Answer 5

remember, even with negatives
\[\sqrt{ab} = \sqrt{a}\sqrt{b}\]

so let a = 25 , and b = -1

what do you get?

Answer 6

are you helping with mine

Answer 7

yes.
does this example help?

\[\sqrt{-16} = \sqrt{16}\sqrt{-1} = 4 \times \sqrt{-1} = 4i\]

Answer 8

no

Answer 9

its square root sign with -25 inside

Answer 10

and says to express in terms of i simplify

Answer 11

i do not understand how to work this problem can you please help

Answer 12

how did you get -1 from 16

Answer 13

dont leave me now