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Intern
Joined: 01 Jun 2011
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08 Jun 2011, 15:15
how do I find the product (x-1)(x-2) if the term x²-3x+2 is given??? Is there any general explanation for factoring??

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08 Jun 2011, 18:17
pro wrote:
how do I find the product (x-1)(x-2) if the term x²-3x+2 is given??? Is there any general explanation for factoring??

x^2-2x-x+2
x(x-2)-1(x-2)
(x-1)(x-2)

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Manager
Status: 700 (q47,v40); AWA 6.0
Joined: 16 Mar 2011
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GMAT 1: 700 Q47 V40

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09 Jun 2011, 02:24
One glance at the equation should tell you the factorization part. Imagine you are given an equation ax^2 + bx + c. You can factorize it by identifying the factors of a*c that add upto b. In other words in your problem above. the product of a and c is 2. and -2, -1 are factors of 2 which add up to -3. So (x+(-1) = x-1 is one factor and likewise x-2 is the other.

Regards
Rahul
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Regards
Rahul

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09 Jun 2011, 02:34
pro wrote:
how do I find the product (x-1)(x-2) if the term x²-3x+2 is given??? Is there any general explanation for factoring??

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Kudos [?]: 2049 [0], given: 376

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