railway RPF SI Mock Test Series 2024 Quantitative Aptitude Number System Square and Square Root

If the positive square root of (5 + 3√2) (5 - 3√2) is α, then what is the positive square root of 8 + 2α ?  

1
2 + √3
2
3 - √2
3
√7 - 1
4
√7 + 1
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