Question

(ii) x(x² + y² – z²) + y (-x² - y² + z²) – z(x² + y² – z²).​

Answer 1

Answer:

multiply the x y and z with brackets and reduce the same numbers plus and minus sigh remaining will be the answer

Answer 2

Answer:

x^3+  xy^2  -xz^2  -yx^2 -y^3 +yz^2 -zx^2  -zy^2 +z^3