Question

(4x-1)^3=(-1/27)
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Answer 1

\(\left(4x-1\right)^3=-\dfrac{1}{27}\)

\(\Rightarrow4x-1=-\dfrac{1}{3}\)

\(\Rightarrow4x=\dfrac{2}{3}\Rightarrow x=\dfrac{1}{6}\)

Answer 2

\(\left(4x-1\right)^3=\left(-\dfrac{1}{27}\right)\Leftrightarrow4x-1=-\dfrac{1}{3}\Leftrightarrow4x=\dfrac{2}{3}\Leftrightarrow x=\dfrac{1}{6}\)