October 2018 1 68 Report
Hola alguien puede ayudarme
Usando productos notables simplifica las siguientes expresiones
a) (x-2)(x+3) - (x-3)(x+2)=
b) (x+y)(x-y)(x2+y2 )=
c) (x+y)2 + (x-y)2 - 2(x2 -y 2 ) =

porfavor me urge mucho
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