1.

The value of xif x 2v3, is:190ISb. 194c. 198d.

Answer»

x=2+root(3)so 1/x=2-rot(3)so x+1/x=4so (x+1/x)^2=x^2+1/x^2+2=16so x^2+1/x^2=14so (x+1/x)^3=64so x^3+3x+3/x+1/x^3=64so x^3+1/x^3=64-3(x+1/x)=64-3(4)=64-12=52



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