Question

(x - y )(x + Y )+ (X - z )(y + Z) +( Z - x)( z + x )is equal to​

Answer 1

Answer:

(2x^2-Zz-yY)+(Xy-zZ)

Step-by-step explanation:

=(x-y) (x+Y) +(X-z) (y+Z) +(Z-x) (z+x)

=(x^2-yY)+(Xy-zZ)+(Zz-x^2)

=(2x^2-Zz-yY)+(Xy-zZ)