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a−a−1
-1
Resultado = -1
b) (x`2+1)+(x`2-1)-(x`2-1)
2x+1+2x−1−2x+1
(2x+2x−2x)+(1−1+1)
2x+1
Resultado= 2x+1
c)-[-4+(5x-8)]
4−5x+8
−5x+12
Resultado= −5x+12
d) -[-(8x`2y+3xy`2)-8x`2y]
16xy+3xy×2+16xy
16xy+6xy+16xy
38xy
Resultado: 38xy