Réponses

2013-01-26T16:38:58+01:00
2013-01-26T16:42:58+01:00

A = (3/4 + x)²

A = 0,75² + 2*(3/4)*x + x²

A =x² + 1,5x + 0,5625

 

B = (3x - 2/3)²

B = (3x)² - 2*3x*(2/3) + (2/3)²

B = 9x² - 4x + (2/3)²