Question

-5b³(1,3-b²)+b⁴(b-7)+6,5b³​

Answer 1

Ответ:

$6b^5-7b^4$

Объяснение:

$-5b^3(1,3-b^2)+b^4(b-7)+6,5b^3=-6,5b^3+5b^5+b^5-7b^4+6,5b^3=\\\\5b^5+b^5-7b^4=6b^5-7b^4$

Answer 2

Ох..............,......