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OpenStudy (anonymous):
Explain, in complete sentences, how you would completely factor 3x3 + 27x2y – 24xy – 216y2 by using the grouping method. How would you check your factors for accuracy?
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OpenStudy (zzr0ck3r):
is this 3x^3?
OpenStudy (anonymous):
yes, srry.
OpenStudy (zzr0ck3r):
3x^3 + 27x^2y - 24xy-216y^2 3x^2(x+9y) - 24y(x+9y) = (3x^2-24y)(x+9y)
OpenStudy (anonymous):
Thanks ;)
OpenStudy (anonymous):
can you tell me what the GCF is?
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OpenStudy (zzr0ck3r):
it cant be higher than 3 because the first term has 3 and they dont all share a x or a y so since 3 devides coeficients then I guess 3
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