If x=(1/2-√3),find the value of
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Answer:f (x)= x^3-2x^2-7x+4
f (1/2-under root3 ) = (1/2-under root3)^3-2 (1/2-under root3)^2-7 (1/2-under root3)+4
1/14-7under root3 - 2/7 - 7/2-under root 3 + 4
1-4-2root3- 49+56-24root3/ 14-7root3
-3-26root3+7/14-7root3
4-26root3/14-7root3
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