énoncé erroné
( 5 x + 2 )² = 25 x² + 20 x + 4
( 3 + 4 x )² = 9 + 24 x + 16 x²
( 6 + x )² = 36 + 12 x + x²
D = a² - 2 ab + b²
e = a² - b²
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énoncé erroné
( 5 x + 2 )² = 25 x² + 20 x + 4
( 3 + 4 x )² = 9 + 24 x + 16 x²
( 6 + x )² = 36 + 12 x + x²
D = a² - 2 ab + b²
e = a² - b²