Question

−0.5i−i please simplify will give medal

Answer 1

(i) is imaginary number

Answer 2

you can treat "i" like it's a variable
and "factor it out"
(-0.5-1)i
now combine the numbers

Answer 3

Treat i as x.
Combine like terms.

Answer 4

i think its -0.5?

Answer 5

what is -½ - 1 ?

Answer 6

0.5?

Answer 7

you have minus 0.5 and take away another 1
you get a more negative number.

Answer 8

You owed someone $0.50.
Now you owe him another $1.
How much do you now owe him altogether?

Answer 9

oh! -1.5?

Answer 10

the "rule" is
if the *same sign*, add the numbers and give the total the same sign

so you get
-1.5 i

Answer 11

ok thanks i get it now

Answer 12

\(−0.5\color{red}{i}−\color{red}{i} = -0.5\color{red}{i} -1\color{red}{i} = (-0.5 - 1)\color{red}{i} = -1.5 \color{red}{i} = -1.5i\)

Answer 13

thank you thinks makes much more sense now

Answer 14

this*

Answer 15

You're welcome.
Don't forget you still have the i there after you combine the -0.5 and the -1.

Answer 16

ok