1)
f(0) =(2*0 +3)(0-4)
= (3)(-4)
=-12
g(0)=2*0^2 -5*0 -12
=-12
donc léo a raison f(0) = g(0)
f(1) =(2*1 +3)(1-4)
= (5)(-3)
= -15
g(1)=2*1^2 -5*1 -12
=2*1 -5 -12
=2 -17
=-15
léo a encore raison f(1) = g(1)
2)
f(x) = (2x +3)(x-4)
= 2x^2 -8x +3x -12
= 2x^2 -5x -12
= g(x)
donc l’affirmation de Emma est juste !
