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14 January, 06:57

how to factor a^4-2a^2-35

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  1. 14 January, 07:49
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    A⁴ - 2a² - 35

    a⁴ + 5a² - 7a² - 35

    a² (a²) + a² (5) - 7 (a²) - 7 (5)

    a² (a² + 5) - 7 (a² + 5)

    (a² - 7) (a² + 5)
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