Respostas

2013-06-13T10:52:47-03:00

Teremos:

(x²/4)² - 2 . x²/4 .2 x²/3 + (2x²/3)² =

x^4/16 - 4x²/12 + 4x^4/9 =

(x^4/16 + 4x^4/9) - 4x²/12 =

9x^4 + 16 x^4 + 48x²

25x^4 + 48x²

 

2 4 2