Question 1040856
Every quadratic equation in variable x with leading coefficient 1,
(i.e., coefficient of x<sup>2</sup> is 1) can be placed in this form:
<pre>
{{{matrix(1,9,

x^2,
""-"",
(matrix(3,1,SUM,OF,ROOTS))*x,
""+"",
(matrix(3,1,PRODUCT,OF,ROOTS)),
"",
""="",
"",
0)}}}

So for 

{{{matrix(1,9,
x^2,
""+"",
m*x, 
""+"",
m(m-1),
"",
""="", 
"",
0)}}} 

{{{matrix(1,5,

(matrix(3,1,PRODUCT,OF,ROOTS)),
""="",
m(m-1),
""="",
2)}}}

{{{m(m-1)}}}{{{""=""}}}{{{2}}}

{{{m^2-m}}}{{{""=""}}}{{{2}}}

{{{m^2-m-2}}}{{{""=""}}}{{{0}}}

{{{(m-2)(m+1)}}}{{{""=""}}}{{{0}}}

m - 2 = 0;  m + 1 = 0
    m = 2;      m = -1

Edwin</pre>