Quando a =-9,b=+2 e c=+10, o valor numerico da expressao a³ - (b-c)³ e:
a)+217
b)-217
c)-1241
d)+1241
e)-729
a)+217
b)-217
c)-1241
d)+1241
e)-729
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Verified answer
-9^3-(-8)^3-729+512
-217
R: Alternativa B
a³ - (b-c)³
a =-9, b=+2 e c=+10
(-9)³ - (2 -10)³
- 729 - ( - 512)
- 729 + 512
- 217