Question

The polynomial x3 + 8 is equal to (x + 2)(x2 – 2x + 4). (x – 2)(x2 + 2x + 4). (x + 2)(x2 – 2x + 8). (x – 2)(x2 + 2x + 8).

Answer 1

2x because its a write answer

Answer 2

The correct option is 1.

Step-by-step explanation:

The given expression is

$x^3+8$

It can be rewritten as

$x^3+2^3$

Formula for sum of cubes:

$a^3+b^3=(a+b)(a^2-ab+b^2)$

For the given expression a=x and b=2.

Using the above formula we get

$x^3+2^3=(x+2)(x^2-(x)(2)+(2)^2)$

$x^3+8=(x+2)(x^2-2x+4)$

Therefore, the correct option is 1.

#Learn more

Formula of the sum of the cubes.

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