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13 April, 22:04

Multiply.

3 х2 - 7 х + 4

5 х2 + 2 х

А. 15 х4 - 35 х3 + 20 х2 + 8x

ов. 15 - 35 х3 + 6 х2 + 8x

Ос. 15 х4 - 29 х3 + 20 х2 + 8x

OD. 15 х4 - 29 х3 + 6 х2 + 8x

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Answers (1)
  1. 13 April, 22:12
    0
    option D

    Step-by-step explanation:

    we have from statement:

    (3 х2 - 7 х + 4) * (5 х2 + 2 х)

    we apply distributive property:

    3 х2 * 5x2 + 3x2 * 2x - 7x * 5x2 - 7x * 2x + 4 * 5x2 + 4 * 2x

    so we have:

    15x4 + 6x3 - 35x3 - 14x2 + 20x2 + 8x

    finally we have:

    15x4 - 29x3 + 6x2 + 8x
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