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Ostrovityanka [42]
2 years ago
8

Which expression is a perfect cube? -8x^21y^8 -64x^64y^64 -125x^9y^20 -216x^9y^18

Mathematics
1 answer:
inysia [295]2 years ago
4 0

Answer:

-216x^9y^{18}

Step-by-step explanation:

~~-216 x^9 y^{18}\\\\=(-6)^3 (x^3)^3 (y^6)^3\\\\=(-6x^3 y^6)^3

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