Réponses

2013-11-10T12:15:35+01:00
1) A = 2(x+3)(x+4)
2) A = 2x²+6x+8x+24
A = 2x² + 14x +24
3) A(0) = 24
A (1) = 40
4)A(x) = 0
<=> 2x²+14x+24 = 0
delta = 14²-4*2*24
delta = 4
x1 = (-14 + 2)/4
x1= -3
x2= -4
A(x) = 0
S = {-3;-4}
*** sa veut dire koi
que veut dire 14²-4*2*24*