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OpenStudy (anonymous):
factor 5x^3-40
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OpenStudy (anonymous):
the 8?
OpenStudy (anonymous):
:-)
OpenStudy (anonymous):
5(x^3-8) 5(x-2)(x^2 + 4 + 2x)
OpenStudy (anonymous):
5(x^3-8)=5(x^3-2^3) now use the identity a^3-b^3=(a-b)(a^2+b^2+ab)
OpenStudy (anonymous):
I used that. the 8 is confusing me
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OpenStudy (anonymous):
oh, I see you changed 8 to a power of notation! is that standard?
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