Well if square it in the calculator we get a decimal so that means 1445 is not a perfect square. So now usually you have to go up the list of perfect squares but here is a trick. Look at the answer choices, just multiply the number in front by the number inside the root and we get 289*5 = 1445.
Also 289 is a perfect square and because of that, it goes in the front and 5 isnt so it stays inside :D
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