Question

Add the product x(x+y-r) y(x-y+r),z,(x-y-Z

Answer 1

product will be:-( x^2+xy-xr)×(yx-y^2+yr)what about ,,,,,comma??

Answer 2

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