Question 131016
a.  

{{{(8x/3y)/(2x/y)}}}


{{{(8x*y)/(3y*2x)}}}


{{{(cross(8x)4*cross(y))/(3cross(y)*cross(2x))}}}


{{{4/3}}}


b.  

{{{(x^2+7x+12)/2x +6x/(x^2-16)}}}



{{{((x^2+7x+12)(x^2-16) + 2x*6x)/2x(x^2-16) }}}


{{{((x^2+7x+12) (x^2-16) + 2*6x^2) / 2x (x^2-16) }}}


{{{( (x^2+7x+12)cross((x^2-16) )+ cross(2)*6x^cross(2)) / cross(2x)1(cross((x^2-16)))}}}


{{{( x^2+7x+12+ 6x) / 1 }}}


{{{ x^2+13x+12  }}}


c.  {{{3/(x^2 + 3x + 2) + 3/( x^2 + 5x + 6)}}}


  {{{3/(x^2 +x + 2x + 2) + 3/( x^2 +x + 6x + 6)}}}
  
{{{3/((x^2 +x) + (2x + 2)) + 3/( (x^2 +x) + (6x + 6))}}}


{{{3/(x(x+1) + 2(x + 1)) + 3/( x(x+1) + 6(x + 1))}}}


{{{3/(x+1)(x + 2) + 3/(x+1)(x + 6)}}}


{{{(3(x + 6) + 3(x + 2))/(x+1)(x + 6)(x + 2) }}}


{{{(3x + 18 + 3x + 6)/(x+1)(x + 6)(x + 2) }}}


{{{(6x + 24)/(x+1)(x + 6)(x + 2) }}}


{{{6(x + 4)/(x+1)(x + 6)(x + 2) }}}