Développement:
(2x - 3)(x - 4) - (2x - 3)²
2x² - 8x - 3x + 12 - (2x - 3)(2x - 3)
2x² - 11x + 12 -(4x² - 6x - 6x + 9)
2x² - 11x + 12 - 4x² + 6x + 6x - 9
-2x² + x + 3
Factorisation:
(2x - 3)(x - 4) - (2x - 3)(2x - 3)
(2x - 3)[(x - 4) - (2x - 3)]
(2x - 3)(x - 4 - 2x + 3)
(2x - 3)(x - 1)
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Développement:
(2x - 3)(x - 4) - (2x - 3)²
2x² - 8x - 3x + 12 - (2x - 3)(2x - 3)
2x² - 11x + 12 -(4x² - 6x - 6x + 9)
2x² - 11x + 12 - 4x² + 6x + 6x - 9
-2x² + x + 3
Factorisation:
(2x - 3)(x - 4) - (2x - 3)²
(2x - 3)(x - 4) - (2x - 3)(2x - 3)
(2x - 3)[(x - 4) - (2x - 3)]
(2x - 3)(x - 4 - 2x + 3)
(2x - 3)(x - 1)