September 2018 1 21 Report
Simplificar, suprimir los signos de agrupación y reduce los términos semejantes.
a) a-(a+1)
b) (x`2+1)+(x`2-1)-(x`2-1)
c) -[-4+(5x-8)]
d) -[-(8x`2y+3xy`2)-8x`2y]

Nota: "`" significa a la 2

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