Question

a^3-b^3+5a^2b-5a^2 на множители

Answer 1

$a^3-b^3+5a^2b-5a^2 = (a^3-b^3)+5(a^b-a^2) =$
$= (a-b)(a^2+ab+b^2) + 5(a+b)(a-b)=$
=$(a-b)(a^2+ab+b^2+5a+5b)$