The value of $(- a)^{24} + (- a)^{17} + (- a)^{521}$ when a=1 is:

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Solution

The correct option is C -1
$(- a)^{24} + (- a)^{17} + (- a)^{521}$
$= a^{24} - a^{17} - a^{521}$
when $a = 1$ ,
Then
value = $(1)^{24} - (1)^{17} - (1)^{521}$
$= 1 - 1 - 1$
$= - 1$

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