(2a-3)(a²-4ab-b²)+3-2a)(a²-5ab+2b²)=b(2a-3)(a-3b)

Question

(2a-3)(a²-4ab-b²)+3-2a)(a²-5ab+2b²)=b(2a-3)(a-3b)

Answer 1

Ответ:

6,2ав^2-3а+в-7,2ав^2=в-3а-ав^2=

2-3×(-2,5)-(-2,5)×2^2=2+7,5+10=19,5