Algebra

ehh im confused in my book it says

Expand these expressions

2(3.+m)
5(2+1)
3(2-4f)

i suck at algebra so can someone explain please? :<
Comments
37
2(3.+m)

->

2 ( 3 . + m )

I KNOW IT'S OLD
it's old but still i lol'd :D
Parent
Oh come on... : D
are you fucking kidding? If you help this random guy with his maths, after frequently refusing to help me with mine, I will not speak to you for 27 days.
Parent
I didn't help him robbziiiiiiiiiboi
Parent
multiply the outside numbers to all of the terms in the brackets

2(3+m) = (2*3) + (2*m) = 6+2m
5(2+1) = (5*2) + (5*1) = 15
3(2-4f) = (3*2) - (3*4f) = 6-12f

Hope that helps.
bringin the math from canada to the world gg
Parent
in line 2
first you solve whats in the ()

dont do the same mistakes as panda did !!!!!!!!!!!
Parent
outcome is the same... 5(3) = 15
Parent
solve this
2+2*2
Parent
thats something completely different :D

anyway its 6...


but if u have something to add up in () it doesnt matter if u solve the stuff inside the () first or if u do it like he did....

but if u have to multiply u should solve the () first ;]
Parent
you missed the point

THERE ARE RULES

DOESNT MATTER ITS THE SAME OUTCOME

YOU SOLVE THE () FIRST !!!!!!!!!!

anyway panda said its 8 :DDDDDDDDDDDDDD
Parent
yeh i know, just wanted to tell you that it doesnt really matter in this case, though
Parent
if he will ignore it now
he will ignore it in the future :(
Parent
I always got the right answer without following the rules @maths and I got average marks :~>
Parent
one word

french
Parent
one word

fuck you jew die irl in a cashfire
Parent
haha

G-line !!!
Parent
lol, you're right in saying that brackets come first.

18/(3+3) = 18/6 = 3

However, in my case it is perfectly correct to distribute the 5 because that's how you do expansion properly... Expansion is a rule which works in math and when you use you always get the right answer. Trust me, I know what I'm talking about :)

By the way, your example is completely relevant. You are discussing brackets yet you provide an example with NO brackets to be found anywhere, good job :D

2+2*2 is an instance of multiplication before addition in the order of operations...
Parent
my example was so prove that you must follow the rules :D
sry if you misunderstood me :(
in hebrew its a fact D:
Parent
okay, fair enough... but I hope you realize that distributing the 5 is perfectly fine and that even if I did that in the future it would still be correct. I know when to distribute and I know when to solve brackets first :P
Parent
in our class it doesnt matter
you must follow the rules :DDD
Parent
omg i learned that when I was 6 u dumb nut :DDD
lol, did i misread? 8DD
omg :DDD
winrar xDDD
2(3.+m)=>6+2m but i dont get the use of the "."
5(2+1) =>5*2+5*1=15
3(2-4f)=>3*2-12f=6-12f
algebra is shit, but those sums are easy ;D
QuoteAge: 15


Liar.
(8) (4)
(k) ° (7) = 0
(3) (k)


for what k is this term = 0 ?

vector etc. btw.

and ° = skalar
didnt reckon sry :s

just wanted to post somethin^^
Parent
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