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Mathematics 56 Online
OpenStudy (anonymous):

Factor completely. 125−27y^3 Enter the factors. Enter the original expression if it cannot be factored.

OpenStudy (anonymous):

@JackleBee is the answer -(3y-5)(9y^2+15y+25)

OpenStudy (anonymous):

(5 - 3y) • (9y2 + 15y + 25) I think is the answer... show me your work

OpenStudy (anonymous):

did you mix the signs?

OpenStudy (anonymous):

i have no idea I got it from the factor calculator..but one of the answer was the original expression

OpenStudy (anonymous):

hmmmmmmm

OpenStudy (anonymous):

125−27y^3 okay so 27 is cube root of 3

OpenStudy (anonymous):

125 is the cube root of 5 because5^3 = 125 right?

OpenStudy (anonymous):

now it's (5 - 3y) • (25 + 15y + 9y2)

OpenStudy (anonymous):

bbuuut now you have to split some terms!

OpenStudy (anonymous):

because now you have to factor: 9y2+15y+25

OpenStudy (anonymous):

is there a website that can show all these steps xD

OpenStudy (anonymous):

Now remember this: You need to get two factors of 225 that equals the coefficient of the middle term, 15 .

OpenStudy (anonymous):

none can be found soooo it's (5-3y) • (9y2+15y+25)

OpenStudy (anonymous):

got it? ;p

OpenStudy (anonymous):

omg...this is so confusing... so the answer is (5-3y)(9y^2+15y+25)

OpenStudy (anonymous):

yeah I think so ;p

OpenStudy (anonymous):

don't worry you will get the hang of it eventually. :)

OpenStudy (anonymous):

http://www.webmath.com/_answer.php

OpenStudy (anonymous):

that's what I got from the website

OpenStudy (anonymous):

hmm

OpenStudy (anonymous):

actually i think ur right

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