Question

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

Answer 1

Step-by-step explanation:

Given,

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

= x y - 3 x square - 2 y square - 6 X Y + 2 x square minus x y + 2 x y - X square + x square -xy +3xy-3y square

= by cancellation,

we get,

=-3xy

hence,-3xy