Question

Find the value of x in the following equation......

(3 × x)³ = 81

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Answer 1

27 × x^3 = 81

x^3 = 81/27 = 3

x = ∛3

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Answer 2

Here, 3x³ = 81

or, x³ = 81/3

or, x³ = 27

or, x³ = 3³

or, x = 3 Ans.