Question

did x^2+y^2+z^2 can be written as (x+y+z)^2​

Answer 1

Answer:

YES IT  CAN BE WRITTEN AS (X+Y+Z)^2

Step-by-step explanation:

Answer 2

No, x²+y²+z² can not be written as (x+y+z)² .

Because, we have know that,

(x+y+z)² = x²+y²+z²+2(xy + yz + zx) .

Hope it's helpful to you.