Question

Factor the polynomial completely using any method. Sum or difference of cubes or by grouping.

x^3-512


-3y^3-24

y^4-81

Answer 1

@nikato

Answer 2

i'll try. kinda forgot about this from last year.. but do you know like the special frmulas for factoring cubes

Answer 3

\[(x-8)(x ^{2} + 8x + 64)\]

Answer 4

a3 + b3 = (a + b)(a2 – ab + b2)
a3 – b3 = (a – b)(a2 + ab + b2)

do you know this? special formulas for cubes

Answer 5

On the second one if you factor out -3 it will help a lot.

Answer 6

so the second one is -3(y^3+8)

Answer 7

Yeah. Where a = y and b = 2

Answer 8

so what would that be?

Answer 9

(y + 2)(y^2 + 2y + 4)

Answer 10

how about the thir d one

Answer 11

wait ill tell u what i got

Answer 12

Not sure about that one

Answer 13

third one... its a special kind of factoring using this fromula
(x-y)(x+y)=x^2-y^2

Answer 14

idk how t solve it...

Answer 15

\[(y ^{2} + 9)(y ^{2} -9)\] and solve for that

Answer 16

how do i solve?

Answer 17

So try to factor each one individually.

Answer 18

First one doesn't factor.

Answer 19

y+3 and y-3

Answer 20

\[(y ^{2} + 9)(y + 3)(y -3)\]

Answer 21

yes

Answer 22

Good job

Answer 23

i need more help on a diff question

Answer 24

sure what is it