December 2020 0 111 Report
Bonjour j'aurais besoin d'aide pour cet exercice merci Dresser le tableau de signes des expressions suivantes:

A (x) = 9x² - 1

B(x) = 16 - x² + (4 - x)(3x - 2)

C (x) = x^3 - x

D (x) = 4x² -12x + 9 - (7 - x)(2x - 3)

E (x) = (x² + 1)(-3x - 5)
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