Réponses

2014-10-15T18:08:41+02:00
On considère la valeur de x = 4
E = x² +5
4² +5
16 + 5 = 21
F = (2x-7)(x-2) - (x-3)²
( 2 X 4 -7)(4 -2) - ( 4 -3)²
(8 -7)(2) - (1)²
1 X 2 - (+1)
2 -1 = 1