angelmolove angelmolove

20-11-2019
Mathematics

contestada

The polynomial x^3+8 is equal to
(X+2)(x^2-2x+4)
(X-2)(x^2+2x+4)
(X+2)(x^2-2x+8)
(X-2)(x^2+2x+8)

Respuesta :

jimrgrant1 jimrgrant1

20-11-2019

Answer:

A

Step-by-step explanation:

x³ + 8 ← is a sum of cubes and factors in general as

a³ + b³ = (a + b)(a² - ab + b²)

Thus

x³ + 8

= x³ + 2³

= (x + 2)(x²- 2x + 4)

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