Question 676404

{{{n^2-2n-15}}}....replace {{{-2n}}} with {{{3n-5n}}}


{{{n^2+3n-5n-15}}}.....group


{{{(n^2+3n)-(5n+15)}}}


{{{n(n+3)-5(n+3)}}}


{{{(n-5)(n+3)}}}