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If (x=2^{3}\cdot3^{-2}), then (x^{-1}) is equal to which expression?यदि (x=2^{3}\cdot3^{-2}), तो (x^{-1}) किसके बराबर होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\frac{9}{8})(\frac{9}{8})
Here (x=\frac{8}{9}), so (x^{-1}=\frac{9}{8}). In exams, apply (a^{-n}=\frac{1}{a^{n}}) in the correct direction.(x=\frac{8}{9}), इसलिए (x^{-1}=\frac{9}{8})। परीक्षा में (a^{-n}=\frac{1}{a^{n}}) को सही दिशा में लगाएं।
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