Question

(x+y+z)2 + (x+y+z)2​

Answer 1

Answer:

2(X^2+Y^2+Z^2+2XY+2YZ+2ZX)

Step-by-step explanation:

there are 2 (x+y+z)2 . And we know (x+y+z)2 =(X^2+Y^2+Z^2+2XY+2YZ+2ZX)

so the ans is 2*(X^2+Y^2+Z^2+2XY+2YZ+2ZX)