Answer:
![√(50x^2)](https://img.qammunity.org/2022/formulas/mathematics/college/8dqyk4hy3duilftg8l8tergacc8sp58ig8.png)
![√(72x^2)](https://img.qammunity.org/2022/formulas/mathematics/college/3t5f2ec1ojzj3zca90grgd9iyqz559on9z.png)
Explanation:
Simplify each given options as much as possible to see which of them has a result that is like a radical.
Option 1:
![√(50x^2)](https://img.qammunity.org/2022/formulas/mathematics/college/8dqyk4hy3duilftg8l8tergacc8sp58ig8.png)
![√(25*2*x^2) = 5x√(2)](https://img.qammunity.org/2022/formulas/mathematics/college/6nzq7j2nuypgm1jt3bwih8k574kwi2rd6c.png)
This is like a radical
Option 2:
![√(32x)](https://img.qammunity.org/2022/formulas/mathematics/college/ief5ga0o11d8mwrkfsblzefid91kjmpc30.png)
![√(16*2*x) = 4√(2x)](https://img.qammunity.org/2022/formulas/mathematics/college/y4czsj4t8an8imdvs9ab3mi93mfejogmzo.png)
This is NOT like a radical
Option 3:
![√(18n)](https://img.qammunity.org/2022/formulas/mathematics/college/pv5jfnzvhbc9ayr1jswvzc187xlbh5kuba.png)
![√(9*2*n) = 3√(2n)](https://img.qammunity.org/2022/formulas/mathematics/college/p248ysaij6un6kr1g7e1lju3105sudqno3.png)
This is NOT like a radical
Option 4:
![√(72x^2)](https://img.qammunity.org/2022/formulas/mathematics/college/3t5f2ec1ojzj3zca90grgd9iyqz559on9z.png)
![√(36*2*x^2) = 6x√(2)](https://img.qammunity.org/2022/formulas/mathematics/college/1g0j91s786yt0ebs7s3rc8cre9srny0bz0.png)
This is like a radical