F(x) = x²-3
F(0)= -3
F(1)= -2
F(-5)= 22
F(0,1) = -2,99
F(racine(3)) = 0
F(-0,5) = -2,75
31) (t-1)²
a m(0) = 1
b m(1) = 0
c m(-9) = 100
d, (t-1)²=-4
(t-1)²+4=0
t²-2t+1+4=0 -> t²-2t+5=0
delta = -16 donc pas de racines
(t-1)²=16
(t-1)²-16=0
t²-2t+1-16=0
t²-2t-15=0
delta=64
racines (antécédents)=5 et -3
