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Simplify.
Remove all perfect squares from inside the square roots. Assume 
a and 
b are positive.

sqrt(81a^(5)b)=

Simplify.\newlineRemove all perfect squares from inside the square roots. Assume \newlineaa and \newlinebb are positive.\newline81a5b\sqrt{81a^{5}b} =

Full solution

Q. Simplify.\newlineRemove all perfect squares from inside the square roots. Assume \newlineaa and \newlinebb are positive.\newline81a5b\sqrt{81a^{5}b} =
  1. Identify perfect squares: Identify the perfect squares in the expression 81a5b\sqrt{81a^{5}b}.\newlineThe number 8181 is a perfect square because 81=9281 = 9^2. The term a5a^{5} can be broken down into a4aa^{4} \cdot a, where a4a^{4} is a perfect square because (a2)2=a4(a^2)^2 = a^{4}. The term bb does not have a perfect square since it is to the first power.
  2. Separate perfect squares: Rewrite the expression by separating the perfect squares from the non-perfect squares.\newline81a5b=92a4ab\sqrt{81a^{5}b} = \sqrt{9^2 \cdot a^{4} \cdot a \cdot b}
  3. Simplify perfect squares: Simplify the square root of the perfect squares.\newlineSince the square root of a perfect square is the base of the square, we have:\newline92a4ab=9a2ab\sqrt{9^2 \cdot a^{4} \cdot a \cdot b} = 9 \cdot a^2 \cdot \sqrt{a \cdot b}
  4. Write final simplified expression: Write the final simplified expression.\newlineThe final simplified expression is 9a2ab9a^2 \cdot \sqrt{ab}.

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