I want to work 4(x+3)(3x-y)

Answer 1

4 ( x + 3 ) ( 3 x - y ) = ( 4 ∙ x + 4 ∙ 3 ) ∙ ( 3 x - y ) =

( 4 x + 12 ) ∙ ( 3 x - y ) = 3 x ∙ 4 x + 3 x ∙ 12 - y ∙ 4 x - y ∙ 12 =

12 x² + 36 x - 4 x y - 12 y