Question 912152
 x^2+px+qx+pq = x(x+p) + q(x+p) = (x+q)(x+p)
m^2-4 = (m-2)(m+2)
{{{2/(x-4)-1/(x+3) = (2(x+3) - 1(x-4))/(x-4)(x+3)= (x+10)/(x-4)(x+3) }}}