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OpenStudy (anonymous):
Factor: (x-7)^3 + (2x+3)^3
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OpenStudy (anonymous):
@lgbasallote
OpenStudy (lgbasallote):
here's a hint... \[\huge a^3 + b^3 = (a+b)(a^2 - ab + b^2)\] does that help?
OpenStudy (anonymous):
Oh! yeah...
OpenStudy (lgbasallote):
wonderful. so do you know how to proceed already?
OpenStudy (anonymous):
Yeah. Let's just see if I get it right.
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OpenStudy (anonymous):
I got (3x-4) (3x^2-11x -42)
OpenStudy (anonymous):
I messed up calc but it's around there.
OpenStudy (lgbasallote):
let me try wolfram...
OpenStudy (lgbasallote):
http://www.wolframalpha.com/input/?i=%28x-7%29%5E3+%2B+%282x%2B3%29%5E3&dataset= yes you were a bit close
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