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10-02-2020
Mathematics

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Show all work to factor x4-5x2+4

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Aaqib10 Aaqib10

10-02-2020

Answer:

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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