4/3+căn5 - 8/1+căn5 +15/căn5

Eodgooch asked Jun 2, 2022

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Eodgooch asked Jun 2, 2022

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11 votes

Answer:

A= (4)/(3 + √(5) ) - (8)/(1 + √(5) ) + (15)/( √(5) )

$= (4(3 - √(5)) )/(4) - (8(1 - √(5) )/( - 4) + (15 √(5) )/(5) = 3 - \sqrt{5 + 2 - 2 \sqrt{5 + 3 √(5 = 5) } }$

Explanation:

$Cảm \: ơn!!!!$

Atk answered Jun 9, 2022

by Atk

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