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Lisonfayollet
@Lisonfayollet
April 2019
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On donne :
C : √12 - 5√75 + 2√147
écrire sous la forme a√3
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Verified answer
V(4*3) -5 V(25*3) + 2V(49*3) = 4 v(3) - 5 * 5 v(3) + 2 * 7 v(3)
=(4-25+14) V(3)=-7 V(3)
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winner123
Verified answer
Bonsoir
c = √12 - 5 √75 + 2 √147
c =√ 3 x 4² - 5 √3 x 5² + 2 √3 x 7²
c = 4√3 - 25√3 + 14√3
= - 7√3
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Verified answer
V(4*3) -5 V(25*3) + 2V(49*3) = 4 v(3) - 5 * 5 v(3) + 2 * 7 v(3)=(4-25+14) V(3)=-7 V(3)
Verified answer
Bonsoirc = √12 - 5 √75 + 2 √147
c =√ 3 x 4² - 5 √3 x 5² + 2 √3 x 7²
c = 4√3 - 25√3 + 14√3
= - 7√3