N
notthing_and_everything


1/ [TEX]abc - ( ab+bc+ca ) + ( a+b+c ) - 1 [/TEX]
2/ [TEX]3a^2c^2 + bd + 3abc + 3adc[/TEX]
3/ [TEX]x^2 + 2cd( 2 - 3cd ) - 10xy - 1 + 25y^2 [/TEX]
4/ [TEX]a( b+c )^2 + b( a+c )^2 + c( a+b )^2 -4abc[/TEX]
5/ [TEX]3abc + a^2( a-b-c ) + b^2( b-a-c ) + c^2( c-a-b ) - c( b-c )( a-c )[/TEX]
Chú ý latex
2/ [TEX]3a^2c^2 + bd + 3abc + 3adc[/TEX]
3/ [TEX]x^2 + 2cd( 2 - 3cd ) - 10xy - 1 + 25y^2 [/TEX]
4/ [TEX]a( b+c )^2 + b( a+c )^2 + c( a+b )^2 -4abc[/TEX]
5/ [TEX]3abc + a^2( a-b-c ) + b^2( b-a-c ) + c^2( c-a-b ) - c( b-c )( a-c )[/TEX]
Chú ý latex
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