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(x+y)^2+z^2=x^2+y^2+z^2+2xy

or

((x+y)^2+z)^2=

(x^2+y^2+2xy+z)^2=

x^4+y^4+z^2+6x^2y^2+4x^3y+2x^2z^2+4xy^3+4xyz^2+2z^2y^2

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Wiki User

14y ago

What else can I help you with?