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Q. Find the value of \( (21^2 – 15^2)^{\frac{2}{3}} \)
✏️ Solution
\( (21^2 – 15^2)^{\frac{2}{3}} \)
\( = (441 – 225)^{\frac{2}{3}} \)
\( = (216)^{\frac{2}{3}} \)
\( = (6^3)^{\frac{2}{3}} \)
\( = 6^{2} \)
\( = 36 \)
Final Answer: \( \boxed{36} \)