Ооо
the polynomial x3 + 8 is equal to
a. (х + 2)(х2 – 2х + 4).
b.(х – 2)(х2 + 2х + 4).
c(х + 2)(х2 – 2х + 8).
d.(х – 2)(х2 + 2х + 8).

a

Step-by-step explanation:

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

a³ + b³ = (a + b)(a² - ab + b²)

Given

x³ + 8

= x³ + 2³

= (x + 2)(x² - 2x + 4) ← in factored form

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

answer: the correct answer is -32

step-by-step explanation: