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√(x^3+x²y+1/4xy²)+√(1/4x²y+xy²+y^3)
=√x*√(x^2+xy+1/4y²)+√y*√(1/4x²+xy+y^2)
=√x*√(x+y/2)^2+√y*√(1/2x+y)^2
=2*12+4*18
=96
=√x*√(x^2+xy+1/4y²)+√y*√(1/4x²+xy+y^2)
=√x*√(x+y/2)^2+√y*√(1/2x+y)^2
=2*12+4*18
=96
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