Question

( z - y )²
questão de prova, me ajudem ​

Answer 1

Oie, Td Bom?!

$= (z - y) {}^{2}$

$= z {}^{2} - 2zy + y {}^{2}$

$= z {}^{2} -2 yz + y {}^{2}$

Att. Makaveli1996