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Mathematics

Үй тапсырмасы

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Гуофарида Хамзина

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5 questions

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  • 1. Multiple-choice
    45 seconds
    2 pts

    (2+x)3=?\left(2+x\right)^3=?

    8+12x+6x2+x38+12x+6x^2+x^3

    8−12x−6x2−x38-12x-6x^2-x^3

    8+12x2+6x+x38+12x^2+6x+x^3

  • 2. Multiple-choice
    45 seconds
    2 pts

    2 . (a−2)3=?2\ .\ \left(a-2\right)^3=?

    a3−6a−12a2+8a^3-6a-12a^2+8

    a3−6a2−12a−8a^3-6a^2-12a-8

    a3−6a2+12a−8a^3-6a^2+12a-8

  • 3. Multiple-choice
    45 seconds
    2 pts

    3.(5−b)3=?3.\left(5-b\right)^3=?

    125−75b+15b2−b3125-75b+15b^2-b^3

    15−75b+15b2−b315-75b+15b^2-b^3

    125−75b−15b2+b3125-75b-15b^2+b^3

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