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OpenStudy (anonymous):
Not sure if it is just me, but I am unable to see your expression : )
OpenStudy (anonymous):
\[6a ^{2} - 5ab + 3b - 12\]
OpenStudy (anonymous):
now do u see it
OpenStudy (anonymous):
The question:
What is the-
a)Term
b)Constant
c)Coefficient
OpenStudy (anonymous):
@jim_thompson5910
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OpenStudy (anonymous):
sorry to ask the question late i was helping another friend
jimthompson5910 (jim_thompson5910):
the terms are separated by a + or a -
jimthompson5910 (jim_thompson5910):
eg: `x+y-z+w` has four terms: x, y, z, w
jimthompson5910 (jim_thompson5910):
the constant is any term that doesn't have a variable attached. It's a single fixed number
OpenStudy (anonymous):
oh ok so there are 4 terms and 1 constant in the equation
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jimthompson5910 (jim_thompson5910):
yes
OpenStudy (anonymous):
but what is coefficient
jimthompson5910 (jim_thompson5910):
coefficients are the numbers in front of the variables
jimthompson5910 (jim_thompson5910):
eg: in `7x`, the 7 is the coefficient
OpenStudy (anonymous):
so there are 3 coefficients in the equation
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jimthompson5910 (jim_thompson5910):
yes
OpenStudy (anonymous):
oh ok but its not done
jimthompson5910 (jim_thompson5910):
I should have stated that subtraction is the same as adding a negative
so something like `1-2` is the same as `1 + (-2)`
jimthompson5910 (jim_thompson5910):
therefore,
\[\Large 6a ^{2} - 5ab + 3b - 12\]
is the same as
\[\Large 6a ^{2} +(- 5ab) + 3b+( - 12)\]
jimthompson5910 (jim_thompson5910):
in that second form, we see each term is separated by a +
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jimthompson5910 (jim_thompson5910):
terms are:
6a^2
-5ab
3b
-12
OpenStudy (anonymous):
ok
jimthompson5910 (jim_thompson5910):
I'm sure you can see what the constant is
for the coefficients, just list the numbers in front of each variable term
OpenStudy (anonymous):
constant is 12
jimthompson5910 (jim_thompson5910):
6,
NEGATIVE 5
3
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OpenStudy (anonymous):
y is it -5?
jimthompson5910 (jim_thompson5910):
because the term is -5ab
the number in front is -5
jimthompson5910 (jim_thompson5910):
go back to \[\Large 6a ^{2} +(- 5ab) + 3b+( - 12)\]
OpenStudy (anonymous):
oh ok now i get it
jimthompson5910 (jim_thompson5910):
the constant should be -12 for the same reason
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OpenStudy (anonymous):
constant=-12
coefficient=6, -5, 3
is that correct?
jimthompson5910 (jim_thompson5910):
yep on all 4
OpenStudy (anonymous):
thnx but its not done
jimthompson5910 (jim_thompson5910):
what else is left?
OpenStudy (anonymous):
they said to simplify 2 more expressions by combining like terms
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jimthompson5910 (jim_thompson5910):
which expressions?
OpenStudy (anonymous):
ill show u
OpenStudy (anonymous):
\[a) 5x-3-3x+6y+4\]
jimthompson5910 (jim_thompson5910):
what are a pair of like terms that you see?
OpenStudy (anonymous):
\[b) -8m ^{2} + 9m - 7m ^{2} + n ^{3}\]
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OpenStudy (anonymous):
the pair of like terms in the first one?
jimthompson5910 (jim_thompson5910):
yeah do you see any like terms in the first one?
OpenStudy (anonymous):
yes i see two pairs of like terms
jimthompson5910 (jim_thompson5910):
ok one pair is what?
OpenStudy (anonymous):
5x, 3x
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jimthompson5910 (jim_thompson5910):
more like 5x and -3x, but you have the right idea
jimthompson5910 (jim_thompson5910):
they would combine to ???
OpenStudy (anonymous):
u mean add?
jimthompson5910 (jim_thompson5910):
yeah, 5x + (-3x) = ??
OpenStudy (anonymous):
it's 2x
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jimthompson5910 (jim_thompson5910):
yep
jimthompson5910 (jim_thompson5910):
you'll do the same for the other pair of like terms
OpenStudy (anonymous):
what is the other pair
jimthompson5910 (jim_thompson5910):
you tell me
jimthompson5910 (jim_thompson5910):
look for any terms that have something in common
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jimthompson5910 (jim_thompson5910):
for the 5x and -3x, they had an x in common
OpenStudy (anonymous):
is it -3, 4
jimthompson5910 (jim_thompson5910):
yes
OpenStudy (anonymous):
yay
jimthompson5910 (jim_thompson5910):
they add to what?
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OpenStudy (anonymous):
is it 1?
jimthompson5910 (jim_thompson5910):
yes
OpenStudy (anonymous):
and then?
jimthompson5910 (jim_thompson5910):
notice how there is only one y term, so there are no like terms for the y terms
all of this means `5x−3−3x+6y+4` simplifies to `2x+6y+1`
OpenStudy (anonymous):
oh ok so 2x+6y+1 is the answer or should i evaluate the expression
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jimthompson5910 (jim_thompson5910):
if you knew the value of x and y, you could evaluate to get a single number
jimthompson5910 (jim_thompson5910):
but they didn't provide values for x and y
OpenStudy (anonymous):
So for now 2x+6y+1 is the answer, right?
jimthompson5910 (jim_thompson5910):
yes
OpenStudy (anonymous):
Ok thank u very much u dont have to explain the 2 expression because its almost the same as the first expression
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jimthompson5910 (jim_thompson5910):
yeah it's very similar so you shouldn't have too much trouble with it
OpenStudy (anonymous):
thats it for today thank u very much dude ur the best
jimthompson5910 (jim_thompson5910):
just keep in mind that terms with \(\Large m^2\) are NOT like terms with \(\Large m^3\)
they both have m, but different exponents makes them different and unlike terms
jimthompson5910 (jim_thompson5910):
same with m and m^2
OpenStudy (anonymous):
oh ok thanks for the tips i fanned and i gave u a medal for all three questions thank u very much i will ask u whenever i have a question from now on.