Question

-3D(a-6ab+55) помагите срочна
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Answer 1

Ответ:

$-3D(a-6ab+55)$

$- 3da - 3d \times (6ab) - 3d \times 55$

$- 3da + 3d \times 6ab - 3d \times 55$

$- 3da + 18dab - 3d \times 55$

$3da + 18dab - 165d$