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Can anyone help me write a^4 - 3a^2 + 9 as a product of two monic quadratics with integer coefficients?

 Jan 24, 2020
 #1
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You can factor a^4 - 3a^2 + 9 as (a^2 - a + 3)(a^2 + a + 3).

 Jan 24, 2020

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