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Riiihaaanaaa
@Riiihaaanaaa
April 2019
1
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BONSOIR POUVEZ VOUS M'AIDER C'EST URGENT !
A = (2x - 3)² - 49
1) developper et reduire
2) factoriser
3) calculer pour x = 2
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Commentaires (2)
1) Développer et réduire.
A= (2x - 3)² - 49
A= 4x² - 12x + 9 - 49
A= 4x² - 12x - 40
2) Factoriser.
A= (2x - 3)² - 49
A= (2x - 3)² - 7²
A= (2x - 3 - 7)(2x - 3 + 7)
A= (2x - 10)(2x + 4)
3) Calculer pour x = 2
A= (2x - 10)(2x + 4)
A= (2 x 2 - 10)(2 x 2 + 4)
A= (4 - 10)(4 + 4)
A= (- 6) x 8
A= - 48
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Riiihaaanaaa
MERCI BEAUCOUP !
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A= (2x - 3)² - 49
A= 4x² - 12x + 9 - 49
A= 4x² - 12x - 40
2) Factoriser.
A= (2x - 3)² - 49
A= (2x - 3)² - 7²
A= (2x - 3 - 7)(2x - 3 + 7)
A= (2x - 10)(2x + 4)
3) Calculer pour x = 2
A= (2x - 10)(2x + 4)
A= (2 x 2 - 10)(2 x 2 + 4)
A= (4 - 10)(4 + 4)
A= (- 6) x 8
A= - 48