February 2021 0 70 Report
Développe puis reduis A = (x + 8) au carré
B = (3x - 9) au carré
C = (x + 7) (x - 7)
D = 4y - 5) (4y + 5)
E = (6 - 2t) au carré


développe puis réduis
F = (3x + 7 ) au carré + (7x - 3) au carré
G = (x + 2) carré - (3x - 5)carré
H = (2x - 5)carré - (4x + 1)carré

calcule expression suivante H pour x =3
merci
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