Question

factorise x(x² + y² - z²) + y(x² + y² - z²) + z(x² + y² - z²)​

Answer 1

Answer:

x(x^2+y^2-z^2)+y(x^2+y^2 -z^2)+

z(x^2+y^2-z^2)

=(x^2+y^2-z^2)(x+y×z)