x(y - Z)+ y (z - x) + z(x - y)
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2
Answer:
(x+y+z)(x−y+z)+(x+y−z)(−x+y+z)−4zx
= x
2
−xy+xz+xy−y
2
+yz+xz−yz+z
2
−x
2
+xy+xz−xy+x
2
+yx+xz−yz−z
2
−4zx
=0
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0
Answer:
0 is the answer.
please check.
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