Bonjour, Recopie chaque expression en rajoutant les signes × sous-entendus, puis calcule-les pour x = − 2.
A = 3x
B = 5x + 1
C = (x − 3)(x + 1)
D = 3x − 2(4x − 1)
E = 7x2
F = 17 − 3x
G = 5(2x − 2)
H = x(x + 1) − 9x
A = 3x
B = 5x + 1
C = (x − 3)(x + 1)
D = 3x − 2(4x − 1)
E = 7x2
F = 17 − 3x
G = 5(2x − 2)
H = x(x + 1) − 9x
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