Question

I will award medal !!!!!!!!!!!!
Please Help!!!!!!!!
Using complete sentences, explain how you would factor completely x^9 –27.

Answer 1

@jim_thompson5910 @whpalmer4

Answer 2

that is formula
(a-b) ( a^2 + ab + b^2)

Answer 3

Oh yes :D

Answer 4

The formula for the difference of two cubes is (x - y)(x + xy + y^2)
the cube root of x^9 = x^3.
the cube root of 27 = 3

x = x^3
y = 3

substitute into the equation

(x^3 - 3)(x^6 + 3x^3 + 9)

Answer 5

Can I get a explanation please.

Answer 6

I explained it :/
Listen you just have to learn the formula :) and only you can understand

Answer 7

look at the formula (a-b)(a^2 + ab + b^2)

then you have x^9 - 27

x^9 = (x^3)(x^3)(x^3)
27 = (3)(3)(3)

so a = x^3 and b = 3

Answer 8

did you understand ?

Answer 9

yes thank you

Answer 10

yw :)