Bonjour pouvez-vous m’aider svp
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bjr
24
A = x * (-9) * 2 = -9 * 2 * x = -18x
B = 1,5 * y * (-8) = 1,5 * (-8) * y = -12y
C = x * (-4) * (-x) * 2 = -4 * 2 * x * (-x) = -8 * (-x²) = 8x²
D = -2y² * (-15) * 2y = -2 * (-15) * 2 * y² * y = 60y³