SOLUTION: {{{r^6 - 64 }}}

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Question 284263: r%5E6+-+64+
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
r^6 - 64 =r^6-2^6
=(r^3-2^3)(r^3+2^3)
=(r-2)(r^2+2r+4)(r+2)(r^2-2r+4)
.
Ed