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Paulo22
@Paulo22
May 2019
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Besoin d'aide pour un exercice de math, merci a vous
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gsantha
Verified answer
Bonsoir
Dans cet exercice, on utilise les identités remarquables
a. (x +
4
)² = (x² + 2*x*4 + 4² =)
x² + 8x + 16
b. (
10x
- 5)² = ((10x)² - 2*10x*5 + 5² =)
100x² - 100x + 25
c. (2x +
3
)² = ((2x)² + 2*2x*3 + 3² =)
4x² + 12x + 9
d. (x -
4
) (x +
4
) = (x² - 4² =)
x² - 16
e. (
7x
+ 1) (
7x
- 1) = ((7x)² - 1² =)
49x² - 1
Voilà j'espère avoir pu t'aider ^^
3 votes
Thanks 1
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paulo22
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Urgent sa serait super sympa ! ;)
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Merci de bien pouvoir m'aidez ;)
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paulo22
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Merci de bien vouloir m'aidez ;)
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Paulo22
May 2019 | 0 Respostas
Bonsoir ! J'aurais besoin d'aide pour cette exercice si possible merci a vous !
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Paulo22
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Paulo22
May 2019 | 0 Respostas
J'aurais besoin d'aide pour cette exercice Merci !
Responda
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Verified answer
BonsoirDans cet exercice, on utilise les identités remarquables
a. (x + 4)² = (x² + 2*x*4 + 4² =) x² + 8x + 16
b. (10x - 5)² = ((10x)² - 2*10x*5 + 5² =) 100x² - 100x + 25
c. (2x + 3)² = ((2x)² + 2*2x*3 + 3² =) 4x² + 12x + 9
d. (x - 4) (x + 4) = (x² - 4² =) x² - 16
e. (7x + 1) (7x - 1) = ((7x)² - 1² =) 49x² - 1
Voilà j'espère avoir pu t'aider ^^