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18 September, 12:49

Find the product of (x² - 5) ² using identities

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  1. 18 September, 12:51
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    Step-by-step explanation:

    by idetity : (a - b) ² = a² + b² - 2ab

    for : (x² - 5) ² you have a = x² and b = 5

    (x² - 5) ² = (x²) ²+5² - 2 (5) (x²)

    (x² - 5) ² = x^4+25 - 10x²
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