(2x+2y)(6y-5x)=???????????????

Question

(2x+2y)(6y-5x)=???????????????

Answer 1

12xy-10x^2+12y^2-10xy=-10x^2+2xy+12y^2=-5x^2+xy+6y^2

Answer 2

(2x + 2y)( 6y - 5x ) = 12xy - 10x^2 + 12y^2 - 10xy = - 10x^2 + 12y^2 + 2xy