Question 860324


{{{9x^2 + 12x + 4 - 9y^2 }}}


{{{(9x^2 + 12x + 4 )- 9y^2 }}}


{{{(3x+2)^2-(3y)^2}}}


(a^2-b^2= (a+b)(a-b)


(3x+2+3y)(3x+2-3y)