How can I find equivalent expressions to the given expression?

Answer:
[tex]\frac{36t^2}{6^t} ~~ Not ~Equivalent[/tex]
[tex]\frac{6t^2}{36^t} ~ ~Equivalent[/tex] ✔︎
[tex]6^{t^2} *36^t ~~ Not~ Equivalent[/tex]
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Hope it helps...
Have a great day!!.