Question 645131


{{{6x^3 + 15x^2 -9x}}}.......replace {{{15x^2}}} with {{{-3x^2 +18x^2}}}

{{{6x^3  -3x^2 +18x^2-9x}}}...group

{{{(6x^3 -3x^2) +(18x^2-9x)}}}

{{{6x^2(2x -1) +9x(2x-1)}}}

{{{(6x^2 +9x)(2x-1)}}}

{{{3x(2x +3)(2x-1)}}}