Question

$3a {}^{2} ab - 5a {}^{3} b {}^{3} b {}^{3} - 6ab \times 2a + 5ab \times 4ab$
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Answer 1

✔ответ ✔

●: $3a^2b-5a^3b^3*b^3-6ab*2a+5ab*4ab = 3a^2b-5a^3b^6-12a^2b+20a^2b^2 = -9a^2b-5a^3b^6+20a^2b^2= -a^2b*(9+5ab^5-20b)$