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3.  Simplify :

 (iv)    7^{\frac{1}{2}}.8^{\frac{1}{2}}

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Given number is  7^{\frac{1}{2}}.8^{\frac{1}{2}}

Now, on simplifying it we will get

\Rightarrow 7^{\frac{1}{2}}.8^{\frac{1}{2}}= (7\times8)^{\frac{1}{2}} = 56^{\frac{1}{2}}                                                          \left ( \because a^n.b^n=(a.b)^n\right )
Therefore, the answer is  56^{\frac{1}{2}} 

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Gautam harsolia

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