Question

expand (x+y-2)^2
please solve this problem​

Answer 1

Answer:

The answer will be 2x+2y-4

Answer 2

Step-by-step explanation:

(a+b-c)²

=a²+b²+c²+2(ab-ac-bc)

Replacing a with x, b with y, c with 2

(x+y-2)²

= x² + y² + (2)²+ 2(xy-2x-2y)

= x²+y²+4+2xy-4x-4y

= x²+y²-4x-4y+2xy+4