Réponses

2014-05-23T16:40:58+02:00
 H = (x-4)² - x(x-10) = x = x²-8x+16 -x²+10x = 2x+16
2x+16 = 16
2x= 16-16
2x=0
x=0
2014-05-23T16:42:41+02:00
H = (x-4)² - x(x-10)
H = x
²-8x+16 -x²+10x
H = 2x+16

si H = 16 alors 2x+16 = 16
 donc 2x =16-16
donc 2x = 0
donc x = 0