Question

Ajuda-me

(2a + b)² - (a - b)²​

Answer 1

$\begin{matrix} \underbrace{ \ \ Produtos \ \ Not\acute{a}veis \ \ } \\\\ (2ab \ + b)^{2} \ - \ (a \ - \ b)^{2} \\\\ (2ab \ + \ b) \ ( \ 2ab \ + \ b) \ \ - \ \ (a \ - \ b)(a \ - \ b) \\\\ 4a^{2}b^{2} \ + \ 2ab^{2} \ \ + \ 2ab^{2} \ + \ b^{2} \ \ - \ \ a^{2} \ - \ ab \ - \ ab \ + \ b^{2} \\\\ \ 6a^{3}b^{4} \ + \ 2ab^{4} \ - \ a^{2} \ - \ 2ab \ + \ b^{2} \\\\ 6a^{4}b^{8} \ - \ a^{2} \ - \ 2ab^{3} \\\\ 6a^{2}b^{8} \ - \ 2ab^{3} \\\\ \boxed{ \ 4ab^{5} \ } \end{matrix}$