Question 109186
{{{(5a-10b) / (4b^2 - a^2 )}}}


{{{5(a- 2b) / ((2b)^2 - a^2 )}}}

{{{5(a- 2b) / (-(a^2 - (2b)^2 ))}}}

{{{5(a- 2b) / (-(a - 2b)(a + 2b)) }}}....cancel {{{a - 2b}}}

{{{5 / (-(a + 2b)) }}}....

{{{-(5 / (a + 2b)) }}}....