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Salut22
@Salut22
May 2019
2
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Bonjour,
J'aurais besoin d'aide pour le développement de L'expression suivante : (4x+5)(x^2-3x+2)-(2x^2-5x-3)(2x^2+5x-3)
Merci :)
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madamecros
Verified answer
(4x au cube -12xcarré +8x +5xcarré-15x+10)-(4xpuissance 4+10xcube-6xcarré-10xcube-25xcarré-15x-6xcarré-15x+9) =-4xpuissance4+4xcube+30xcarré -7x+1. si je ne me suis pas trompée...
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nini999
Bonsoir :
(4x + 5)(x² - 3x + 2) - (2x² - 5x - 3)(2x² + 5x - 3)
(4x³ - 12x² + 8x + 5x² - 15x + 10)-(4x⁴ + 10x³ - 6x² - 10x³ - 25x² + 15x - 6x² - 15x + 9)
(4x³ - 12x² + 5x² + 8x - 15x + 10)-(4x⁴ + 10x³ - 10x³ - 6x² - 25x² - 6x² + 15x - 15x + 9)
(4x³ - 7x² - 7x + 10) - (4x⁴ + 0 - 37x + 0 + 9)
4x³ - 7x² - 7x + 10 - (4x⁴ - 37x + 9)
4x³ - 4x² - 7x + 10 - 4x⁴ + 37x - 9
4x³ - 4x² - 7x + 37x + 10 - 9 - 4x⁴
4x³ - 4x² + 30x + 1 - 4x⁴
J’espère t'avoir t'aider
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Verified answer
(4x au cube -12xcarré +8x +5xcarré-15x+10)-(4xpuissance 4+10xcube-6xcarré-10xcube-25xcarré-15x-6xcarré-15x+9) =-4xpuissance4+4xcube+30xcarré -7x+1. si je ne me suis pas trompée...(4x + 5)(x² - 3x + 2) - (2x² - 5x - 3)(2x² + 5x - 3)
(4x³ - 12x² + 8x + 5x² - 15x + 10)-(4x⁴ + 10x³ - 6x² - 10x³ - 25x² + 15x - 6x² - 15x + 9)
(4x³ - 12x² + 5x² + 8x - 15x + 10)-(4x⁴ + 10x³ - 10x³ - 6x² - 25x² - 6x² + 15x - 15x + 9)
(4x³ - 7x² - 7x + 10) - (4x⁴ + 0 - 37x + 0 + 9)
4x³ - 7x² - 7x + 10 - (4x⁴ - 37x + 9)
4x³ - 4x² - 7x + 10 - 4x⁴ + 37x - 9
4x³ - 4x² - 7x + 37x + 10 - 9 - 4x⁴
4x³ - 4x² + 30x + 1 - 4x⁴
J’espère t'avoir t'aider