Question

Упрости выражение и заполни пропуски.
(r6 + 3)(r2 – 4) – r8 – 3r2 = –
Дам 15 баллов срочно​

Answer 1

$(r^6+3)(r^2-4)-r^8-3r^2 = (r^6+3)(r^2-4)-r^2(r^6+3) = (r^6+3)(r^2-4-r^2) =\\\\=(r^6+3)\cdot (-4 ) = -4(r^6+3)$