uitwerkingen

x2-16=0 x2=16 x=-4 of x=4	x2+2x=0 x(x+2)=0 x=0 of x+2=0 x=0 of x=-2
3x2-6=12 3x2=18 x2=6 x =$ -\sqrt 6 $ of $ \sqrt 6 $	2x(4x+2)=0 2x=0 of 4x+2=0 x=0 of 4x=-2 x=0 of x=$-\frac{1}{2}$
x2+4x+3=0 (x+1)(x+3)=0 x+1=0 of x+3=0 x=-1 of x=-3	x2-6x-16=0 (x-8)(x+2)=0 x-8=0 of x+2=0 x=8 of x=-2
x2+4x-12=0 (x-2)(x+6)=0 x-2=0 of x+6=0 x=2 of x=-6	3x2-6x+3=0 x2-2x+1=0 (x-1)2=0 x-1=0 x=1
x2=x x2-x=0 x(x-1)=0 x=0 of x-1=0 x=0 of x=1	(x+2)2=4x+4 x2+4x+4=4x+4 x2=0 x=0
x2-3x+2=x-1 x2-4x+3=0 (x-3)(x-1)=0 x-3=0 of x-1=0 x=3 of x=1	3x2-4x=2x(x-1) 3x2-4x=2x2-2x x2-2x=0 x(x-2)=0 x=0 of x-2=0 x=0 of x=2