plz ans its my request
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Step-by-step explanation:
if you rationalise x will be 2 + √3
= ( 2 + √3 )^3 - 2( 2 + √3 )^2 - 7( 2 + √3 ) + 5
= 4 + 3√3 + 12√3 + 18 - 14 - 8√3- 14 - 7√3 + 5
= 3
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answer is here .........
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