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13 April, 12:14

Factor the expression X^4+6X^2 - 7 completely.

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  1. 13 April, 12:40
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    Answer: (x - 1) (x + 1) (x + 7) ²

    Step-by-step explanation:

    x⁴ + 6x² - 7

    find two numbers whose product is - 7 and sum is + 6 - -> - 1 & 7

    Those values go into the parenthesis: (x² - 1) (x + 7) ²

    Notice that (x² - 1) is the difference of squares - -> (x - 1) (x + 1)
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