Question 172074
5 the square root of 25x^7
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5*sqrt(25x^7)
Separate the perfect square factor from the other as follows:

= 5sqrt(25x^6)*sqrt(x)

Take the square root of the perfect square factor:

= 5*5x^3*sqrt(x)

Simplify:

= 25x^3sqrt(x)

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Cheers,
Stan H.