Question 150432
Multiplying,
{{{(a+1/5)(a+1/4)}}}
{{{a^2}}}+{{{(1/5)a+(1/4)a}}}+{{{1/20}}}
{{{a^2}}}+{{{(4a+5a)/20}}}+{{{1/20}}}
{{{a^2}}}+{{{9a/20}}}+{{{1/20}}} -----> your answer when multiplied.
To get "a", by quadratic eqn: {{{a=1}}},{{{b=9/20}}},{{{c= 1/20}}}
*[invoke quadratic equation "x", 1, 9/20, 1/20]