Question

(i) (x + y) (2x + y) + (x + 2y) (x - y)​

Answer 1

PLS CHECK THE PIC I'VE UPLOADED

Answer 2

Answer:

3x² + 4xy - y²

Step-by-step explanation:

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

= { (x)(2x) + (x)(y) + (y)(2x) + (y)(y) } + { (x)(x) + (x)(-y) (2y)(x) + (2y)(-y) }

= ( 2x² + xy + 2xy + y² ) + ( x² -xy + 2xy - 2y²)

= 2x² + 3xy + y² + x² +xy - 2y²

= 3x² + 4xy - y²