If \frac{z}{y} = \frac{1}{3}, then find the value of (y 3 + z 3 ) ÷ (y 3 - z 3 ).

UP Police SI Exam 12 Dec 2017 Shift 1 Solved Paper

Question : 90 of 160

Marks: +1, -0

\;{z}/{y} = \;{1}/{3}

, then find the value of (y³ + z³) ÷ (y³ - z³).

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