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15 July, 09:08

Factoring Perfect Cubes:

What is 250x^4 + 128x factored completely?

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  1. 15 July, 13:00
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    250x⁴ + 128x

    2x (125x³) + 2x (64)

    2x (125x³ + 64)

    2x (125x³ + 100x² - 100x² + 80x - 80x - 64)

    2x (125x³ + 100x² + 80x - 100x² - 80x - 64)

    2x (5x (25x²) + 5x (20x) + 5x (16) - 4 (25x²) - 4 (20x) - 4 (16))

    2x (5x (25x² + 20x + 16) - 4 (25x² + 20x + 16))

    2x (5x - 4) (25x² + 20x + 16)
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