Question

\(\left(x-y\right)^2-2\left(x-y\right).z^3+z^6\)

Answer 1

\(=\left(x-y\right)^2-2\left(x-y\right)z^3+\left(z^3\right)^2\)

\(=\left(z-y-z\right)^2\)

Answer 2

\(=\left(x-y\right)^2-2\left(x-y\right).z^3+\left(z^3\right)^2\)

\(=\left(x-y-z\right)^2\)

Answer 3

bài có nghĩa là sao ??? Phân tích hay tính z bn ???