How do you simplify vectors?

1)AB + BC + CD

2) BC - FE - BA + DE - DC

Calculus - Steve, Tuesday, September 22, 2015 at 11:39pm
AB+BC = AC
so, AB+BC+CD = AD

BC-DC = BC+CD = BD
See if you can use that idea to rearrange +/- terms so the ends line up in order

Calculus - Anonymous, Tuesday, September 22, 2015 at 11:57pm
I need an explanation on how to do it. I just started learning this and it doesn't make sense to me.

2 answers

Line them up on a number line.
for 2)
BC + EF + AB + DE + CD

AB + BC + CD = AD
DE + EF = DF
so
AD + DF
but AD + DF = AF
so in the end
AF
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