please help solve sqrt [a / b] sqrt[a^2 / b^2]

Solve?. I see nothing to solve. Perhaps you mean simplify?.

If so, \(\displaystyle \L\\\sqrt{\frac{a}{b}}\cdot\sqrt{\frac{a^{2}}{b^{2}}}\)

Not much to do except:

\(\displaystyle \L\\|\frac{a}{b}|\sqrt{\frac{a}{b}}\)
 
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