Question

what is the absolute value of -8+5? is it
3 or 13 ?

Answer 1

3

Answer 2

'cos -8+5
=-3
then the |-3|=3

Answer 3

|-8+5|=|-3|=3

Answer 4

how come \[\left| a+b \right|= \left| a \right|+\left| b \right| \]

I don't get it

Answer 5

You must be thinking of \[|a \dot\ b|=|a| \dot\ |b|\]

Answer 6

so what is \[\left| a+b \right|\] =?

Answer 7

\[\left| a+b \right| = \left| b+a \right|\] ?

Answer 8

Yeah, that looks right

Answer 9

ok thanks!