Question

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Answer 1

Answer:

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Answer 2

If $x^{21} - 20$ is divided by $x + 1$, then what is the remainder.

By Using Remainder Factor Theorem,

$x +1 = 0$

So, $x = -1$

Putting $x = -1$ in the Polynomial.

$( - 1) ^{21} - 20 \\ = - 1 - 20 \\ = - 21$

Hence, the remainder is -21.

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