Question

pls slove pls this pls​

Answer 1

Step-by-step explanation:

Addition:

(x²-2xy+y²)+(x²+2xy+y²)

x²-2xy+y²+x²+2xy+y²

2x²+2y²

Subtraction:

(2x²+2y²)-(x²-4xy+4y²)

2x²+2y²-x²+4xy-4y²

x²+2y²+4xy