Question 706549

{{{28m^2+28m-56}}}..factor out {{{28}}}

{{{28(m^2+m-2)}}}.....replace {{{m}}} with {{{2m-m}}}

{{{28(m^2+2m-m-2)}}}....group

{{{28((m^2+2m)-(m+2))}}}

{{{28(m(m+2)-(m+2))}}}

{{{28(m-1)(m+2)}}}