Question

хелп! срочно!
-21b^3-14b^2
mn+3m-n^2-3n
81a^2-b^2
3y^3-36y^2+108y
(x+2)^2-49=0
182^3+62^3 -182*62=
  244

Answer 1

-7b²(3b+2)
m(n+3)-n(n+3)=(n+3)(m-n)
(9a-b)(9a+b)
3y(y²-12y+36)=3y(y-6)²
(x+2-7)(x+2+7)=(x-5)(x+9)
(182+62)(182²-182*62+62²)/244 - 182*62=244(182²-182*62+62²)/244 - 182*62=
182²-182*62+62² - 182*62=182²-2*182*62+62²=(182-62)²=120²=14400

Answer 2

Спасибо!