Urgent SVP, c'est pour demain
D= (4x - 3)² - (x - 4) (4x - 3) Réduire, Ordonner et Factoriser D
D= (4x - 3)² - (x - 4) (4x - 3) Réduire, Ordonner et Factoriser D
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=16x²-24x+9-(4x²-3x-16x+12)
=16x²-24x+9-4x²+3x+16x-12
=12x²-5x-3
factorisation:
D= (4x - 3)² - (x - 4) (4x - 3)
=(4x-3)(4x-3)-(x-4)(4x-3)
=(4x-3)(4x-3-x+4)
=(4x-3)(3x+1)