Degree of the polynomials $(x + 2) (x^{2} - 2 x + 4)$ is

2

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3

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4

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1

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Solution

The correct option is B $3$
Given that

$(x + 2) (x^{2} - 2 x + 4)$

$\Rightarrow x^{3} - 2 x^{2} + 4 x + 2 x^{2} - 4 x + 8$

$\Rightarrow x^{3} + 8$

$∴$ The degree of the polynomial $x^{3} + 8 = 3.$

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