Question

Add the product: x(x+y=r), y(x-y+r), z(x-y–z)
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Answer 1

Step-by-step explanation:

x(x+y-z)+y(x-y+z)+z(x-y-z)

x^2+xy-xz+xy-y^2+yz+xz-yz-z^2

x^2-y^2-z^2+2xy

Answer 2

$\huge\tt\red{❥Answer}$

${x}^{2} + xy - rx + xy - {y}^{2} + ry + xz \\ - yz - {z}^{2} \\ {x}^{2} - {y}^{2} - {z}^{2} + 2 xy - rx + ry + xz \\ - yz \\ {x}^{2} - {y}^{2} - {z}^{2} + 2xy - r(x + y) + z \\ (x - y)$