Calcule, mentalmente, o valor das expressões
a) 45 - 52² =
b) -10 + 1⁵ + 3² =
c) 2⁰ + 4² - 2⁴ =
d) 50 - 7² =
e) (-4)² - 14 =
f) (2)³- (3)² =

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