1.

∣∣∣∣x+y+2zxyzy+z+2xyzxz+x+2y∣∣∣∣=2(x+y+z)3

Answer»

∣∣
∣
∣
x+y+2zxyzy+z+2xyzxz+x+2y∣∣
∣
∣
=2(x+y+z)3



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