Question 202151

1. {{{(x^2-y^2)/(8x-8y)}}}


{{{((x-y)(x+y))/8(x-y)}}}


{{{highlight_green((x+y)/8)}}}


2. {{{(7-y)/(y-7)}}}   =   {{{-1(y-7)/(y-7)}}} = {{{highlight_green(-1)}}}


3. {{{(75a^2b)/25ab^2}}}   =   {{{(25*3*a*a*b)/(25*a*b*b)}}}  =  {{{highlight_green(3a/b)}}}