Bonsoir,
1)
A = (5x - 2)²
A = 25x² - 20x + 4
B = (3x + 2/2) (3x - 2/2)
B = (3x + 1) (3x - 1)
B = 9x² - 1
5)
A = (2x + 1)² + 2 (x - 4)
A = 4x² + 4x + 1 + 2x - 8
A = 4x² + 6x - 7
B = (3x - 2)² - 4 (x + 2)
B = 9x² - 12x + 4 - 4x - 8
B = 9x² - 16x - 4.
Réponse :
Bonsoir
Explications étape par étape
Developper :
A = (5x - 2)^2
A = 25x^2 - 20x + 4
B = (3x + 2/2)(3x - 2/2)
B = 9x^2 - 1
A = (2x + 1)^2 + 2(x - 4)
A = 4x^2 + 4x + 1 + 2x - 8
A = 4x^2 + 6x - 7
B = (3x - 2)^2 - 4(x + 2)
B = 9x^2 - 12x + 4 - 4x - 8
B = 9x^2 - 16x - 4
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Verified answer
Bonsoir,
1)
A = (5x - 2)²
A = 25x² - 20x + 4
B = (3x + 2/2) (3x - 2/2)
B = (3x + 1) (3x - 1)
B = 9x² - 1
5)
A = (2x + 1)² + 2 (x - 4)
A = 4x² + 4x + 1 + 2x - 8
A = 4x² + 6x - 7
B = (3x - 2)² - 4 (x + 2)
B = 9x² - 12x + 4 - 4x - 8
B = 9x² - 16x - 4.
Verified answer
Réponse :
Bonsoir
Explications étape par étape
Developper :
A = (5x - 2)^2
A = 25x^2 - 20x + 4
B = (3x + 2/2)(3x - 2/2)
B = 9x^2 - 1
A = (2x + 1)^2 + 2(x - 4)
A = 4x^2 + 4x + 1 + 2x - 8
A = 4x^2 + 6x - 7
B = (3x - 2)^2 - 4(x + 2)
B = 9x^2 - 12x + 4 - 4x - 8
B = 9x^2 - 16x - 4