Объяснение:
1 - B. a(a^2 - b)
2 - C. (a - 3)(a - 3)
3 - D. (a - 3)^2
4 - A. (a - 2b)(a^2 + 2ab + 4b^2)
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Объяснение:
1 - B. a(a^2 - b)
2 - C. (a - 3)(a - 3)
3 - D. (a - 3)^2
4 - A. (a - 2b)(a^2 + 2ab + 4b^2)