## anonymous 5 years ago simplify this radical expression sqrt 121y^10

1. anonymous

$\sqrt{121*y^{10}}=\sqrt{11^2*(y^{5})^2}=11\left| y^5 \right|$

2. anonymous

11y^5, 11*11 = 121 y^10 = (y^2)^5 so the square root of all of that is 11y^5.

3. anonymous

thanks. ;]

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