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OpenStudy (-welp-):
How is sqrt20 not in simplified radical form?
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zepdrix (zepdrix):
Because 20 contains a factor which is a `perfect square`! :)
zepdrix (zepdrix):
If you break down 20 into its prime factorization, it might become more clear,\[\large\rm 20=4\cdot5=2\cdot2\cdot5\]
zepdrix (zepdrix):
\[\large\rm \sqrt{20}=\sqrt{4\cdot5}=\sqrt{4}\cdot\sqrt{5}\]Square root of 4 can be simplified, ya?
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