Réponses

2013-03-27T17:07:36+01:00

A = -(8z + 8)(5 + (-9z)) + (-6z + (-3))(2 + (-5z)) 

A = -(8z + 8)(5 - 9z) + (-6z - 3)(2 - 5z)

A = -40z + 72z² - 40 + 72z - 12z +30z² - 6 + 15z

A = 102z² + 35z - 46