Question

qual o polinomio de (7a _b)2 ​

Answer 1

Oie, Td Bom?!

$= (7a - b) {}^{2}$

$= (7a) {}^{2} - 2 \: . \: 7ab + b {}^{2}$

$= 49a {}^{2} - 14ab + b {}^{2}$

Att. Makaveli1996