Question

efetuando-se (8a²- b²)(8a²+b²)-(8a²-b²)² obtemos:​

Answer 1

Resposta:

$(a+b)*(a-b)=(a^{2}-b^{2})$

$[(8a^{2})^{2}-(b^{2})^{2}] - [64a^{4}-16*a*b+b^{4}] = [64a^{4} - b^{4}] - 64a^{4}+16*a*b-b^{4} = 16*a*b-2*b^{4}=2b*[8a-b^{3}]$