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Mathematics

Evaluate :

xab×xbc×xca\sqrt{x^{a-b}} \times \sqrt{x^{b-c}} \times \sqrt{x^{c-a}}

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xab×xbc×xcaxab2×xbc2×xca2xab2+bc2+ca2xab+(bc)+(ca)2xab+bc+ca2x01\sqrt{x^{a-b}} \times \sqrt{x^{b-c}} \times \sqrt{x^{c-a}}\\[1em] \Rightarrow x^{\frac{a-b}{2}} \times x^{\frac{b-c}{2}} \times x^{\frac{c-a}{2}}\\[1em] \Rightarrow x^{\frac{a-b}{2} + \frac{b-c}{2} + \frac{c-a}{2}}\\[1em] \Rightarrow x^{\frac{a-b + (b-c) + (c-a)}{2}}\\[1em] \Rightarrow x^{\frac{a-b + b-c + c-a}{2}}\\[1em] \Rightarrow x^0\\[1em] \Rightarrow 1

Hence, xab×xbc×xca\sqrt{x^{a-b}} \times \sqrt{x^{b-c}} \times \sqrt{x^{c-a}} = 1

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