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Step-by-step explanation:
plz mark it as brainliest
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Step-by-step explanation:
if x=√3+1/2
4x^3+2x^2-8x+7
=4(√3+1/2)^3+2(√3+1/2)^2-8(√3+1/2)+7
=(3√3+1/2)+(4/2)-(4√3+4)
=3√3+1/2+4/2-4√3-4
=-5√3-4/2
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