1
F(x)= x² + 8x + 9
X=-10
X= -3
X = (-4,-7)
2
2x² -5x + 2 =0
X= -3
x= 1/2 x= 2
X = 5
3
F(x)= x² + 3x -10 =0
x¹= 2
x² = -5
X=-3
x¹ = -5
x²= 2
4
-x² + 2x - 1=0
X=1
X=0
X¹=1
X²= -4
5
F(x) =-2x² + 4x -9
V=(1,-7)
V=(0,1)
V=(0,0)
6
F(x) = 5x² + 15x=0
X=( 0,-3)
X=( 13,-4)
X= (0,0)
