Question

I need help with evaluate expressions. One of the questions is l-3l

Answer 1

Anything within | | is ALWAYS positive. So 3.

Answer 2

Recall that
\[|a| = a \text{ if } a >= 0\]
\[|a| = -a \text{ if } a < 0\]

Answer 3

Which is the absolute value.
For examples:
|2| = 2
|0| = 0
|-45454| = 45454

Answer 4

It's absolute value.

Answer 5

thanks so much :)

Answer 6

Push good answer for me and Polpak so no other helper has to view this

Answer 7

how do i do that?

Answer 8

It says "Good Answer" on their answer.

Answer 9

i dont see it, is it the medal