Mathematic Problems
x23-x3=0
x23-x3=0
x23-x33=0
x233-3x232·x3+3x23x32+x33=0
x2-3x23·x3x23-x3+x=0
x2-3x3·x3·0+x=0
x2+x=0
xx+1=0
x1=0 ; x2=-1
x1=0 ; x2=-1