October 2018 1 69 Report
Estara bien
estos ejercicios

a)si x²-xy+x²=entonces x=y es verdadero

b)si m²+n²-mn=mn,entonces m=n es verdadero
explicme como es
c)si a²=b²,entonces a=b U a=-b es falso

si tengo algun error corrigeme con explicacion
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