Question 705837


{{{u^2-2u-63}}}....write {{{-2u}}} as {{{7u-9u}}}

{{{u^2+7u-9u-63}}}....group

{{{(u^2+7u)-9(u+7)}}}

{{{u(u+7)-9(u+7)}}}

{{{(u-9)(u+7)}}}