Question

if x=
$1 \div 2 - \sqrt{3} find \: the \: value \: of \: {x}^{3} - 2 {x}^{2} - 7x + 5$
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Answer 1

Answer:

x=1/2 -√3

x= 1-2√3/2

then

x^3 =(1-2√3)^3/2^3

x^3 =1-24√3-6√3(1-2√3)

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