Answer:


Explanation:
|If you can't type the square root symbol, then just write it as square root of 40 but not 40 itself|

Factor out 40
40: 4 and 10
The 4 is the number that can be square root so then square root the 4 and bring the 10 inside the radical

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![a^(1)/(2) =\sqrt[2]{a}](https://img.qammunity.org/2024/formulas/mathematics/high-school/y1wlw5mdehv3deyeqrbg7tysk1p27ot4n1.png)
![40^(1)/(2)=\sqrt[2]{40}](https://img.qammunity.org/2024/formulas/mathematics/high-school/tdam06714xm9gg9vjdq8c9do63tqsb4bxy.png)
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![\sqrt[2]{160} =4√(10)](https://img.qammunity.org/2024/formulas/mathematics/high-school/jdsfq5ixiii49uq2xmmtvjy1gd5ek6wkq7.png)