y=3^1/3+1/3^1/3 then show that 3y^3-9y=10
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3
27
=
3
3×3×3
=3
3
125
=
3
5×5×5
=5
3
64
=
3
4×4×4
=4
∴
3
64
3
27
+
3
125
=
4
3+5
=
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