Question

(a+7)*(a+2)во 2 степени​

Answer 1

Ответ:

$(a + 7) \times (a + 2) {}^{2} \\ \\ a {}^{3} + 4a {}^{2} + 4a + 7a {}^{2} + 28a + 28 \\ \\ a {}^{3} + 11a {}^{2} + 32a + 28$

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