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nydimaria [60]
3 years ago
14

How would the expression x^2+27 be rewritten using sum of cubes?

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0
Assuming the square is not a typo, one can write


x^2+27=(x^{2/3})^3+3^3=(x^{2/3}+3)\bigg((x^{2/3})^2-3x^{2/3}+9\bigg)

=(x^{2/3}+3)\bigg(x^{4/3}-3x^{2/3}+9\bigg)
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