Mathematics
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ILovePuppiesLol (ilovepuppieslol):
http://prntscr.com/ax74h6
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OpenStudy (math&ing001):
You can see that the common factor is 3a²b.
ILovePuppiesLol (ilovepuppieslol):
why r u copying my pic ;-; @math&ing001
ILovePuppiesLol (ilovepuppieslol):
yes i see that
OpenStudy (math&ing001):
That's @AloneS 's pic lol
Well after identifying the common factor, you basically just factorize.
ILovePuppiesLol (ilovepuppieslol):
factorize? @math&ing001
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alones (alones):
;~;
OpenStudy (tomy12345):
ok lets go thru this step by step
OpenStudy (tomy12345):
you ready
OpenStudy (tomy12345):
first we factor the coefficients
OpenStudy (math&ing001):
Here's an example 56a²b³ + 24ab² = 8ab²*7ab + 8ab²*3 = 8ab²(7ab+3)
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OpenStudy (tomy12345):
sorry
OpenStudy (tomy12345):
first we need to find the GCF of the coefficients
OpenStudy (tomy12345):
so...
OpenStudy (tomy12345):
we need the GCF of 9, 24, and 15
OpenStudy (tomy12345):
do you know what the GCF of those numbers are?
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ILovePuppiesLol (ilovepuppieslol):
3
OpenStudy (tomy12345):
I'll give a hint list the prime factors of these three numbers and find the factor that they all have in common.
OpenStudy (tomy12345):
can you do that?
OpenStudy (tomy12345):
sorry ddi not see that 3. so ok
OpenStudy (tomy12345):
now we need to find the GCF of variable a and b.
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ILovePuppiesLol (ilovepuppieslol):
i do not understand that part
OpenStudy (tomy12345):
ok now let's first find the GCF of our 3 a variables
OpenStudy (tomy12345):
a^4
a^3
a^2
now i will factorize them and you will tell me what they have in common
OpenStudy (tomy12345):
ok?
@ILovePuppiesLol
OpenStudy (tomy12345):
@ILovePuppiesLol
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OpenStudy (tomy12345):
a^4 = a*a*a*a
a^3 = a*a*a
a^2 = a*a
how much a's do the three have in common?
ILovePuppiesLol (ilovepuppieslol):
i see 2 a's in common @tomy12345 lol
OpenStudy (tomy12345):
ok now for the b variables
OpenStudy (tomy12345):
b^3 = b*b*b
b^2 = b*b
b^1 = b
how much b's do the three have in common?
ILovePuppiesLol (ilovepuppieslol):
1
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OpenStudy (tomy12345):
ok
OpenStudy (tomy12345):
so to factor completely we need to do opposite of distributive property.
OpenStudy (tomy12345):
so when we finish factorizing it should look something like...
(this is just a example):...
OpenStudy (tomy12345):
\[3a^3b^6(3^4-4a^3+b^2)\]
OpenStudy (tomy12345):
now lets use the information of the...
coefficient =
a-variable =
b-variable =
these are the gcf's
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OpenStudy (tomy12345):
now can you fill the numbers in?
ILovePuppiesLol (ilovepuppieslol):
the a variable is 2 and b variable is 1 right
OpenStudy (tomy12345):
yes now for the coefficient
ILovePuppiesLol (ilovepuppieslol):
3?
OpenStudy (tomy12345):
yes now can you put the GCF of that trinomial together? using...
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OpenStudy (tomy12345):
coefficient = 3
a-variable = a^2
b-variable = b
ILovePuppiesLol (ilovepuppieslol):
yes sir
ILovePuppiesLol (ilovepuppieslol):
\[3a^2b\]
OpenStudy (tomy12345):
perfect
OpenStudy (tomy12345):
now for the next part
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OpenStudy (tomy12345):
ok now for your three other terms
OpenStudy (tomy12345):
this is how our equation looks right now...
OpenStudy (tomy12345):
\[3a^2b(?+?-?)\]
ILovePuppiesLol (ilovepuppieslol):
i am no genius
OpenStudy (tomy12345):
now to find out what goes in those three spots we divide our three terms by...
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OpenStudy (tomy12345):
now to find out what goes in those three spots we divide our three terms by...\[3a^2\]
OpenStudy (tomy12345):
woops sorry...
ILovePuppiesLol (ilovepuppieslol):
was i correct?
OpenStudy (tomy12345):
\[3a^2b\]
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OpenStudy (tomy12345):
let me check
OpenStudy (tomy12345):
no
OpenStudy (tomy12345):
ok lets go thru it one term after another
OpenStudy (tomy12345):
dividing \[3a^2b / 9a^4b^3\]
OpenStudy (tomy12345):
so first of all you know that when dividing variables you just subtract there exponents.
can you divide it know for me?
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OpenStudy (tomy12345):
can you divide it now for me?
OpenStudy (tomy12345):
i can show you its simple (if you want)
ILovePuppiesLol (ilovepuppieslol):
sure, please show me, i hate these problems @TOMY12345 don't forget to tag me lol xD if i am inactive
OpenStudy (tomy12345):
ok sorry
OpenStudy (tomy12345):
so part by part here to
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OpenStudy (tomy12345):
first the coefficient 9/3
OpenStudy (tomy12345):
=
OpenStudy (tomy12345):
@ILovePuppiesLol
ILovePuppiesLol (ilovepuppieslol):
3
OpenStudy (tomy12345):
ok
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OpenStudy (tomy12345):
now the a variable (remember all we have to do is subtract exponents when dividing)...
OpenStudy (tomy12345):
\[a^4/a^2\]
OpenStudy (tomy12345):
=
ILovePuppiesLol (ilovepuppieslol):
a^2
OpenStudy (tomy12345):
good
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OpenStudy (tomy12345):
now can you do the b variable by yourself for the first term
OpenStudy (tomy12345):
@ILovePuppiesLol
ILovePuppiesLol (ilovepuppieslol):
reporting for duty sir
ILovePuppiesLol (ilovepuppieslol):
its just b
OpenStudy (tomy12345):
sorry for taging you to much xd
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OpenStudy (tomy12345):
no, look...
write the first term and post it for me to see...
ILovePuppiesLol (ilovepuppieslol):
wait was it supposed to be b^2
OpenStudy (tomy12345):
yes
ILovePuppiesLol (ilovepuppieslol):
ohhhhh
OpenStudy (tomy12345):
did you get it why it is b^2
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OpenStudy (tomy12345):
\[3a^2b(3a^2b^2+?−?)\]
OpenStudy (tomy12345):
can you try finding out the other two terms by yourself (just want to make sure you got how to do it)
ILovePuppiesLol (ilovepuppieslol):
8ab-5?
OpenStudy (tomy12345):
YES,YES you got it nice job (did you guess)
ILovePuppiesLol (ilovepuppieslol):
nope
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OpenStudy (tomy12345):
good job
OpenStudy (tomy12345):
;)
OpenStudy (tomy12345):
but you got it that was the important part
OpenStudy (tomy12345):
it is kind of interesting why when dividing variables you subtract instead :)