2xy-12xz+3y-18z= -6z(2x+3)+y(2x+3)=(2x+3)(y-6z)
2007-01-16 07:01:11
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answer #1
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answered by Anonymous
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Group and factor and inspect.
Note that in the first 2 terms, you can factor out x and a factor with a y and a z.
And the 3rd and 4th term have a y and z term. This gives you a clue that they can have a common factor by inspection
as, 2x(y-6z) + 3(y-6z).. Now since y-6z is a common factor,
you can rewrite it as (y-6z) (2x +3).
Now, it is always a good idea to check your work by FOILing. You should get the original expression.
2007-01-16 15:07:28
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answer #2
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answered by Aldo 5
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By GRouping ( put two sets to a group - get two groups)
(2xy-12xz)+(3y-18z)
2x(y-6z)+3(y-6z)
Pull common factor (y-6z)
(2x+3)(y-6z)
2007-01-16 15:03:22
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answer #3
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answered by Anonymous
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Start by factoring a 2x out of the first two terms:
2x(y - 6z) + 3y - 18z
Now factor a 3 out of the last two terms:
2x(y - 6z) + 3(y - 6z)
Now notice the common (y - 6z) and factor that out:
(2x + 3)(y - 6z)
2007-01-16 14:54:44
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answer #4
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answered by Puzzling 7
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group into 2 groups
(2xy + 3y) - (12xz + 18z)
fator out the commons,
y(2x + 3) - 6z(2x + 3)
(2x + 3) is now the common, factor it out
therefore,
(2 - 6z) ( 2x + 3). Ans.
2007-01-16 14:58:57
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answer #5
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answered by Cu Den 2
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Here, you have a potential pattern in the four terms some multiple of y - some multiple of z, some multiple of y - some multiple of z. So let's find the multiples in that pattern. 2x divides both of the first terms, and 3 divides both of the latter terms. putting this together, your expression reads:
2x(y-6z) + 3(y-6z).
Now, we see that (y-6z) divides the entire expression, and the complete factorization is:
(2x+3)(y-6z).
2007-01-16 15:04:36
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answer #6
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answered by math grad student 1
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