Question

раскройте скобки:
(5m+8n)(8n-5m)
(11a-13b)(11a+13b)
(2m-n^2)^2
(3p^2-2q^3)^2

Answer 1

(8n+5m)(8n-5m)=64n^2-25m^2
121a^2-169b^2
2m^2-4n^2m+n^4
9p^4-12p^2q^3+4q^6