1.

R = ​

Answer»

Step-by-step EXPLANATION:

\sqrt{ { ({(1 + 1 + (2 \times 1 \times 1 \times 0))}^{2} )}^{2} }  \\  =  \sqrt{ { ({(1 + 1 + (0))}^{2} )}^{2} }  \\  =  \sqrt{ { {((2)}^{2} )}^{2} }  \\  =  \sqrt{ {4}^{2} }  \\  =  \sqrt{16}  \\   \large{ \boxed{=   \underline{ \underline{ 4}}}}



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