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1 answers

x^4 - 13x² - 12x = 0
x(x³ - 13x - 12) = 0
x(x + 3)(x + 1)(x - 4) = 0

x = -3, -1, 0, 4

2007-10-15 14:09:09 · answer #1 · answered by Northstar 7 · 1 0

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