Question

Срочно!!!!!!!!!!!!!!!!!!

Answer 1

1)

$\displaystyle 5a^5b^3-40a^2b^6=5a^2b^3*(a^3-8b^3)=5a^2b^3*(a-2b)*(a^2+2ab+4b^2)$

2)

$\displaystyle a^2-b^2+a+b=(a-b)(a+b)+(a+b)=(a+b)(a-b+1)$