Life despite any better still dream, nothing more than better health illnesses
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Ta có:P=∑x(yz+1)2z2(xz+1)P=∑x(yz+1)2z2(xz+1)
=∑(yz+1)2z2(xz+1)x=∑(yz+1)2z2(xz+1)x
=∑(y+1z)2z+1x=∑(y+1z)2z+1x
≥(x+y+z+1x+1y+1z)2x+y+z+1x+1y+1z≥(x+y+z+1x+1y+1z)2x+y+z+1x+1y+1z
=x+y+z+1x+1y+1z≥x+y+z+9x+y+z=x+y+z+1x+1y+1z≥x+y+z+9x+y+z
=(x+y+z+94(x+y+z))+274(x+y+z)=(x+y+z+94(x+y+z))+274(x+y+z)
≥2√94+274.32=152