Question 356453
 {{{ x^2-(4+3x)(x)=x(x-(4+3x)) }}} 
 {{{ x^2-(4+3x)(x)=x(x-4-3x) }}} 
 {{{ x^2-(4+3x)(x)=x(-2x-4)) }}}
 {{{ x^2-(4+3x)(x)=highlight(-2x(x+2)) }}}