Respuesta :

[tex]\bf \sqrt{550}\qquad \begin{cases} 550=2\cdot 5\cdot 5\cdot 11\\ \qquad 2\cdot 5^2\cdot 11\\ \qquad 22\cdot 5^2 \end{cases}\implies \sqrt{22\cdot 5^2}\implies 5\sqrt{22}[/tex]
i would square root it by to by dividing it by to as many times as possible and if its a point greater the 5 round it up if not greater then leave it with no point and the answer to your question is 7.4 but the simplified answer would be a 7 
I hope this helped in the best way and sent me an invite and ill help you some more 
J.S.

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