Автор - arsenamrakulov99

2abc•(5abc-7ab)=?
(k+d)•(k-dk-d)=?

Ответ

Автор - meitsmario

1) 10а2b2c2-17а2b2c

2) k2-dk2-kd+dk-d2k-d2

Ответ

Автор - iliya6580

Ответ:

10a {}^{2} b {}^{2} c {}^{2}  - 14a {}^{2}b {}^{2}  c

k {}^{2}  - dk {}^{2}  - dk + dk - d {}^{2}k - d {}^{2}  =

k {}^{2}  - dk {}^{2}  - d {}^{2} k - d {}^{2}

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