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Mathematics 19 Online
OpenStudy (unknown):

which of the following is the correct factorization of the polynomial below? 27x^3+64 a) (3x+4)(9x^2-12x+16) b) (9x+8)(3x^2-16x+8) c) (3x^2+8)(9x-16x+8) d) the polynomial is irreducible

OpenStudy (anonymous):

If it was (27x^3 - 64) it would have been the difference of cubes

OpenStudy (unknown):

oh i see. how about this one: x^3+14x^2+49

OpenStudy (curry):

hero i have been looking for you for the past 3 days

OpenStudy (curry):

i even asked in chat no one replied

OpenStudy (anonymous):

Actually, the answer IS a

OpenStudy (curry):

lol i have been dreading working by myself

OpenStudy (anonymous):

It's the sum of cubes

OpenStudy (anonymous):

Curry, I'm also Hero

OpenStudy (curry):

can you help me now

OpenStudy (unknown):

what? ugh.

OpenStudy (curry):

like your status is hero

OpenStudy (anonymous):

Did you already enter the answer or something?

OpenStudy (unknown):

he's helping me curry

OpenStudy (anonymous):

Yeah, the answer is A

OpenStudy (unknown):

yes i did :( for that one that someone said d

OpenStudy (curry):

hero can you email me a new class

OpenStudy (anonymous):

I could, but I'm at work right now...

OpenStudy (unknown):

hero can you help with the one i just posted?

OpenStudy (anonymous):

Okay, unknown, for your original post, the answer is A, not D

OpenStudy (anonymous):

I will post a solution for the other one as well

OpenStudy (curry):

well can you help me

OpenStudy (curry):

later

OpenStudy (unknown):

i got that, but i put d so it's wrong. but here is another one: x^3+14x^2+49x a) x(x+7)^2 b) x(x+7)(x-7) c) (x^2+7x-2)(x-14) d) (x^2+7x-2x)(x-7)

OpenStudy (anonymous):

You shouldn't put answers in so fast. Normally people here wait for two or three people to verify an answer

OpenStudy (anonymous):

Curry, I can help you later.

OpenStudy (unknown):

oh. ha sorry

OpenStudy (curry):

like 5min from now

OpenStudy (anonymous):

The answer is b for x^3 + 14x + 49x

OpenStudy (unknown):

that was wrong. true or false the expression below is a sum of cubes 216x^3+64

OpenStudy (anonymous):

Sorry, I was away from my desk...I can help you with that

OpenStudy (anonymous):

true

OpenStudy (unknown):

it's cool.. are you sure? idk what steps to solve this by

OpenStudy (anonymous):

I thought I had to factor that at first....I realized that it was just a T/F question

OpenStudy (unknown):

yeah not this one. ha

OpenStudy (anonymous):

Oh....crap, the answer was a for that other one. That's what I got. I had it right, I said b for some reason instead of a

OpenStudy (anonymous):

You're having some bad luck here But I am definitely sure about the fact that 216x^3 + 64 is a sum of cubes

OpenStudy (anonymous):

It's definitely true without a doubt...The mistake I made earlier was a slight oversight

OpenStudy (unknown):

okay. i'm gonna give you a factor one. ahah alright

OpenStudy (unknown):

it's cool are you a tutor on here ? jw lol and mistakes happen

OpenStudy (anonymous):

I can tutor people if they need it, yes.

OpenStudy (unknown):

alright cool. here it is 64x^3+343y^3

OpenStudy (unknown):

well it's not like a factor. but you have a formula (a+b)(a^2-ab+b^2) so A for this would be ... um

OpenStudy (unknown):

4x and b would be 7y

OpenStudy (anonymous):

What was the question...I want to make sure I get this one right. You posted the expression but not the question...

OpenStudy (anonymous):

I can't see the same thing you can you have to post everything

OpenStudy (unknown):

it just says: factor the expression given below. write the factor as a polynomial in descending order.

OpenStudy (unknown):

i know. i can't copy and paste so i type it out, and it's like the same thing. so i just don't put directions sometimes unless they change.

OpenStudy (anonymous):

(4x+7y)(16x^2 - 4x7y+49y^2)

OpenStudy (unknown):

yes like that :)

OpenStudy (anonymous):

That's always the form you're supposed to write it in

OpenStudy (unknown):

yeahh. and the only thing that changes is the addition sign if it's subtraction.

OpenStudy (unknown):

okay this one says which of the following is the correct factorization of the polynomial below? p^3-216q^3

OpenStudy (unknown):

then it gives options

OpenStudy (anonymous):

(p-6q)(p^2+6pq+36q^2)

OpenStudy (unknown):

good. this one says factor the expression given below. y^3-125

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