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# a#=a^2+2, what is the value of b#? 1. (b-1)#=3 2. (b+2)#=6

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Current Student
Joined: 29 Jan 2005
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a#=a^2+2, what is the value of b#? 1. (b-1)#=3 2. (b+2)#=6 [#permalink]

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10 Dec 2005, 06:09
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a#=a^2+2, what is the value of b#?

1. (b-1)#=3
2. (b+2)#=6
Director
Joined: 13 Nov 2003
Posts: 790
Location: BULGARIA
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10 Dec 2005, 06:21
from A) b can be 2 or 0
from B) b can be 0 or -4
so C) seems the plausible answer
Director
Joined: 24 Oct 2005
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10 Dec 2005, 15:42
BG wrote:
from A) b can be 2 or 0
from B) b can be 0 or -4
so C) seems the plausible answer

from B how do u get 0 and -4

i got 0 and 2 again

b^2+ 2b+4 +2 = 6

b^2 +2b = 0
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