simplify- (x+y+z)²+(x+y/2+z/3)²-(x/2+y/3+z/4)²
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(x+y+z)²+(x+y/2+z/3)²-(x/2+y/3+z/4)
=x+y+z²+x+y/2+z/3²-x×2-y×3-z×4
=x+y+z²/2+z/3²×2×3×4
=x+y+z²/2+z/432
=x+y+z²+x+y/2+z/3²-x×2-y×3-z×4
=x+y+z²/2+z/3²×2×3×4
=x+y+z²/2+z/432
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Hope it will help you
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