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Answer: [tex]y^9[/tex]
This is the same as saying y^9
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Explanation:
When we apply the square root to the expression [tex]a^{2b}[/tex], we end up with [tex]a^b[/tex]
[tex]\sqrt{a^{2b}} = a^b[/tex]
The exponent 2b divides in half to get b
Based on that rule, we can then say:
[tex]\sqrt{y^{18}} = y^{18/2} = y^9[/tex]