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Junior | Next Rank: 30 Posts
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by lanter1 » Tue Jul 31, 2007 3:52 pm
a^4 - 3a^3 - a + 3=(a^3-1)(a-3)

(a^3-1)(a-3)/(a-3)=-126

(a^3-1)=-126

a^3=-125

a=-5
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