Q. Simplify.Remove all perfect squares from inside the square roots. Assume a and b are positive.81a5b =
Identify perfect squares: Identify the perfect squares in the expression 81a5b.The number 81 is a perfect square because 81=92. The term a5 can be broken down into a4⋅a, where a4 is a perfect square because (a2)2=a4. The term b does not have a perfect square since it is to the first power.
Separate perfect squares: Rewrite the expression by separating the perfect squares from the non-perfect squares.81a5b=92⋅a4⋅a⋅b
Simplify perfect squares: Simplify the square root of the perfect squares.Since the square root of a perfect square is the base of the square, we have:92⋅a4⋅a⋅b=9⋅a2⋅a⋅b
Write final simplified expression: Write the final simplified expression.The final simplified expression is 9a2⋅ab.
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