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Mathematics 17 Online
OpenStudy (anonymous):

Factor completely. 3x3 – 27x A. 3x(x – 3)(x – 3) B. 3(x + 3)(x – 3) C. 3x(x – 3)(x + 3) D. 3x(x – 9)

OpenStudy (anonymous):

@helpme1.2

OpenStudy (anonymous):

any idea what the answer should be, or how you should approach it ?

OpenStudy (anonymous):

no clue && my teacher didnt explain it

OpenStudy (solomonzelman):

\[3x^3-27x\] 1) factor out of 3x. 2) use a²-b²=(a-b)(a+b)

OpenStudy (anonymous):

^^

OpenStudy (anonymous):

she didnt really explain it at all

OpenStudy (anonymous):

still confused, or you okay?

OpenStudy (solomonzelman):

Who is "she" ?

OpenStudy (anonymous):

ive got c is that correct?

OpenStudy (anonymous):

the teacher is she))

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

:D

OpenStudy (anonymous):

are these correct too?? Determine the prime factorization of 88. A.2^2 • 3 • 5 B.2 • 3^2 • 5 C.2^2 • 11 D.2^3 • 11

OpenStudy (anonymous):

^^got d for that one

OpenStudy (anonymous):

@helpme1.2 @SolomonZelman

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

thank you

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