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Hasnaa95190
@Hasnaa95190
May 2019
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Exercice difficile à faire de l'aide svp, piece jointe
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winner123
Verified answer
Bonjour
périmètre = 3 √72 + 5 √2 + √128
= 3√2*6² + 5 √2 + √2*8²
= 18√2 + 5 √2 + 8√2 =
31√2
2) IH² = (13√7)² - (√175)²
IH² = 1 183 - 175
IH² = 1 008
IH = √ 1 008
3) [ (- x + √2 ) x 2 ]²
= ( - 2 x + 2√2)² = 4 x² + 8
4 x² + 8 = 288
4 x² = 288 - 8
4 x² = 280
x² = 70
x = √70 ou - √70
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Hasnaa95190
Merci beaucouppppppp
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Verified answer
Bonjourpérimètre = 3 √72 + 5 √2 + √128
= 3√2*6² + 5 √2 + √2*8²
= 18√2 + 5 √2 + 8√2 = 31√2
2) IH² = (13√7)² - (√175)²
IH² = 1 183 - 175
IH² = 1 008
IH = √ 1 008
3) [ (- x + √2 ) x 2 ]²
= ( - 2 x + 2√2)² = 4 x² + 8
4 x² + 8 = 288
4 x² = 288 - 8
4 x² = 280
x² = 70
x = √70 ou - √70