Is x^2-2x+1 / x^2+1= 0? (1) x2 3x + 2 = 0. (2) x + y 3 = 0 : DS Archive
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Is x^2-2x+1 / x^2+1= 0? (1) x2 3x + 2 = 0. (2) x + y 3 = 0

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Is x^2-2x+1 / x^2+1= 0? (1) x2 3x + 2 = 0. (2) x + y 3 = 0 [#permalink]

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28 Oct 2004, 23:13
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Is x^2-2x+1 / x^2+1= 0?
(1) x2 â€“ 3x + 2 = 0.
(2) x + y â€“ 3 = 0 and 2x â€“ y = 0

pls explain
Joined: 31 Dec 1969
Location: Russian Federation
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Kudos [?]: 196 [0], given: 100901

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28 Oct 2004, 23:45
B.

1. can be rewritten as (x-2)(x-1) = 0 => x=2 or x=1. applying x=2 or x=1 in the stimulus, we have the stimulus being either of the two values - 1/5 or 0. so, Insuff.

2. suff. the equations allow us to find the value of x as 1. if x=1 the stmulus is = 0. Hence suff.
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