Question

Find the difference.

5wx2 - 2wx2

Answer 1

3wx^2

Answer 2

ty... how do you do it?
do you subtract the first but not the last?

Answer 3

use FOIL

Answer 4

?

Answer 5

whats FOIL?

Answer 6

first outside inside last

Answer 7

there is no such thing as "foil" it is something dumb math teachers say

Answer 8

well it works

Answer 9

\[5wx^2 - 2wx^2\] is exactly the same as \(5-2\)

Answer 10

satellite73 can u help me after plz

Answer 11

since
\[5-2=3\] you know
\[5wx^2 - 2wx^2=3wx^2\]

Answer 12

i said the answer already but thanx for explainng it

Answer 13

there is no foil here
tin-foll
aluminium foil
curses foiled again
no such mathematical operation as foil

Answer 14

lol hahaha omg but yess it is i learned it and it works with problems like these

Answer 15

no actually this is called "combining like terms"

Answer 16

yes it is

Answer 17

"foil" is a nmeonic devise for remembering that which has nothing whatsoever to do with this
\[(a+b)(c+d)=ac+ad+bc+bd\]

Answer 18

PENDAS is one way you can solve a problem... but only for multi step equations or 2 step equations

Answer 19

yea you can use pemdas

Answer 20

pemdas is another math teacher lie
ignore it

Answer 21

no its not

Answer 22

there is no such thing as pembas,anymore than there is a foil

Answer 23

it works so kids can learn it better

Answer 24

no it only confuses them because it is a lie

Answer 25

no it dones't confuse anybody it makes the problem easier

Answer 26

\(\bf 5{\color{brown}{ wx^2}} - 2{\color{brown}{ wx^2}}\implies \square?{\color{brown}{ wx^2}} \)

Answer 27

\[20\div 5\times 2\]

Answer 28

its not... its pretty good i got 101% on things with PEMDAS... all trough middle school (5th, 6th, and 7th grade)

Answer 29

according to "pemdas" i do the multiplication first and get
\[20\div 10=2\] but that is way wrong
ignore pemdas

Answer 30

another bad mnemonic device to confuse students

Answer 31

no i used it threw out middle school so it does work because i made 100%

Answer 32

no you divide first... m and d share... so in that case 20 /5 is 4 and 4 times 2 is 8... checked answer... correct. :)

Answer 33

math-geek is correct

pe(md)(as)

it doesnt say you have to do multiplication first, just either multiplication or division first, depending which's first by reading left to right, before add or subtract.

Answer 34

pemdas isn't lie, it's just that most students misunderstood it and they though they have to do multiplication first... @satellite73

Answer 35

(13x2 + 5x) + 8x2=__

Answer 36

anyone know?