Division of powers:
[tex]\frac{a^m}{a^n}=a^{m-n}[/tex]For the given division:
[tex]\frac{y^2}{y^{-2}}=y^{2-(-2)}=y^{2+2}=y^4_{}[/tex]_______________________________________________
Negative power:
[tex]a^{-n}=\frac{1}{a^n}[/tex]For the given expression:
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