guides pedagogiques de mathematiques - CEM OUSMANE NGOM
G = (4 ? 7x)(4 + 7x). H = (x + 4)(x ? 6) + (?1 + x)(x ? 7). I = ?3(a² + 2) ... EXERCICE 1 : A = 2x(x + 3) = 2x² + 6x. B = ?7y²(?5 ? 2y²) = 35y² + 14y4. C = (x + 5)( ...
G = (4 ? 7x)(4 + 7x). H = (x + 4)(x ? 6) + (?1 + x)(x ? 7). I = ?3(a² + 2) ... EXERCICE 1 : A = 2x(x + 3) = 2x² + 6x. B = ?7y²(?5 ? 2y²) = 35y² + 14y4. C = (x + 5)( ...