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Valou774
@Valou774
May 2019
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Bonjour pourriez vous m aider merci bcp =)
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1)
A = √32 - 5√18 - 5√8
= √16*√2 - 5*√9*√2 - 5*√4*√2
= 4√2 - 5*3*√2 - 5*2*√2
= 4√2 - 15√2 - 10√2
= -21√2
B = √8 * √18 * √32
= √(8*18*32)
= √4608
= √2304 * √2
= 48√2
2)
C = (4√5 + √3)²
= (4√5)² + 2*4√5*√3 + (√3)²
= 16*5 + 8*√15 + 3
= 80 + 3 + 8√15
= 83 + 8√15
D = (2√7 + 3√2)²
= (2√7)² + 2*2√7*3√2 + (3√2)²
= 4*7 + 12√14 + 9*2
= 28 + 12√14 + 18
= 46 + 12√14
3)
E = (3 - 2√2)(3 + 2√2) est de la forme (a-b)(a+b)=a²-b²
= 3² - (2√2)²
= 9 - 4*2
= 1
F =
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valou774
January 2021 | 0 Respostas
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valou774
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Bonjour pourriez vous m aidez car je n' y comprend rien:
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valou774
January 2021 | 0 Respostas
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valou774
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Bonjour tout le monde j ai un peux de mal a la question 3 a et b, 4 a et b, et la 4 c car je n est jamais fait de perspective merci bcp =)
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valou774
January 2021 | 0 Respostas
Bonjour tout le monde j ai un peux de mal a la question 3 a et b, 4 a et b, et la 4 c car je n est jamais fait de perspective merci bcp =)
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valou774
January 2021 | 0 Respostas
Slt merci bcp pour votre aide =)
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valou774
January 2021 | 0 Respostas
Bjr pourriez vous m' aider PLEASE Merci bcp
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valou774
January 2021 | 0 Respostas
Bonjour pourriez vous m' aidez please je sais pas comment faire HELP
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valou774
January 2021 | 0 Respostas
Bonjour c' est pour demain merci bcp de votre aide HELP
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Valou774
May 2019 | 0 Respostas
Bonjour pourriez vous m' aidez help me =)
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A = √32 - 5√18 - 5√8
= √16*√2 - 5*√9*√2 - 5*√4*√2
= 4√2 - 5*3*√2 - 5*2*√2
= 4√2 - 15√2 - 10√2
= -21√2
B = √8 * √18 * √32
= √(8*18*32)
= √4608
= √2304 * √2
= 48√2
2)
C = (4√5 + √3)²
= (4√5)² + 2*4√5*√3 + (√3)²
= 16*5 + 8*√15 + 3
= 80 + 3 + 8√15
= 83 + 8√15
D = (2√7 + 3√2)²
= (2√7)² + 2*2√7*3√2 + (3√2)²
= 4*7 + 12√14 + 9*2
= 28 + 12√14 + 18
= 46 + 12√14
3)
E = (3 - 2√2)(3 + 2√2) est de la forme (a-b)(a+b)=a²-b²
= 3² - (2√2)²
= 9 - 4*2
= 1
F =