January 2021 0 90 Report
Bonjour, j'aurais besoin d'aide pour un devoir de maths (3e) Factoriser chaque expression

H= 9 + 4x² - 12x
J= x²-2x +1
K= y²-18y+81
L= 16x² + 25 - 40x

Je n'ai pas compris comment faire,
Merci
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