Question

utilizando a regra de produtos notaveis calcule (3ab+1)²

Answer 1

(3ab+1)²
3ab²+2.3ab.1+1²
9ab²+6ab+1

Answer 2

Oie, Td Bom?!

$= (3ab + 1) {}^{2}$

$= (3ab) {}^{2} + 2 \: . \: 3ab \: . \: 1 + 1 {}^{2}$

$= 9a {}^{2} b {}^{2} + 6ab + 1$

Att. Makaveli1996