Respostas

2013-05-20T19:44:41-03:00

a) L = 2x - y

A = L² , logo: ------> A = (2x-y)² -------> A = 4x² - 4xy + y²

 

b) L = 3x - y

A = L² , logo: ------> A = (3x-2y)² ------> A = 9x² - 12xy + 4y²

3 3 3