Question 675524


{{{7x + 28x^2 -35x^3}}}

{{{7x(1 + 4x -5x^2)}}}....replace {{{4x}}} with {{{-x+ 5x}}}

{{{7x(1 -x+ 5x -5x^2)}}}...group

{{{7x((1 -x)+ (5x -5x^2))}}}

{{{7x((1 -x)+ 5x(1 -x))}}}

{{{7x((1+ 5x)(1 -x))}}}