Question 662281

{{{10ax^2-23ax-5a}}}

{{{a(10x^2-23x-5)}}}..replace {{{-23x}}} with {{{2x-25x}}}

{{{a(10x^2+2x-25x-5)}}}..group

{{{a((10x^2+2x)-(25x+5))}}}

{{{a(2x(5x+1)-5(5x+1))}}}

{{{a(2x-5)(5x+1)}}}