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Mathematics
Ace Stein
8 September, 04:51
Show all work to factor x4-5x2+4
+1
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Onyx
8 September, 06:40
0
x = 1 or - 1
x = - 2 or 2
Step-by-step explanation:
x4 - 5x2 + 4 = 0
x4 - 4 x2 - x2 + 4 = 0
x2 (x2 - 4) - 1 (x2 - 4) = 0
(x2 - 1) (x2 - 4) =
x2 - 1 = 0 or x2 - 4 = 0
x2 = 1 x2 = 4
x = 1 or - 1 x = - 2 or 2
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