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Factor 6x4 - 5x2 + 12x2 - 10 by grouping. What is the resulting expression? (6x + 5) (x2 - 2)

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  1. 4 May, 13:04
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    6x^4 - 5x² + 12x² - 10

    6x^4 + 7x² - 10

    6x^4 ⇒ 3x² * 2x²

    -10 ⇒ 5 * - 2

    (6x² - 5) (x² + 2)

    6x² (x² + 2) - 5 (x² + 2)

    6x^4 + 12x² - 5x² - 10

    6x^4 + 7x² - 10

    6x² - 5 = 0

    x² = 5/6

    x = √5/6

    x² + 2 = 0

    x² = - 2

    x = √-2
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