3√2+3√16-3√54 = simplify it
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∛2 + ∛16 - ∛54
2^1/3 + 16^1/3 - 54^1/3
2^1/3 + 2^4(1/3) - (3^3 * 2)^1/3
2^1/3 + 2^4/3 - 3*2^1/3
2^1/3( 1 + 2^(1+1/3) - 3)
2^1/3 + 2*2^1/3 - 3*2^1/3
Let 2^1/3= a
a + 2a - 3a = 3a - 3a = 0
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