ShmoopTube

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Okay sy shmoop er's next up in these ugly square

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root problems Alright what squared A forty five minute squared

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of twenty What Multiplication division signs can go in and

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out of square roots but addition and subtraction signs cannot

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think of it as what happens in vegas stays in

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vegas except with more man We need to do something

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with the given expression however so start by simplifying each

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square root Well first we have screwed a forty five

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and factor the perfect square nine there from forty five

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and we get screwed in nine times Five is three

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times square Two five all right do the same with

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twenty which has perfect square four innit Right Four times

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five twenty mean square root of four times five or

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to times square to five Now both squares could be

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written as a multiple of the square root of five

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So just subtract multiples of square to five it's just

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like subtracting multiples of x And we get three times

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square to five minus two times square to five which

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is just the square root of five And so there

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we have it Grow to forty five minus square twenty

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is just the square root of five that's it We're 00:01:02.963 --> [endTime] done its egg

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