8 Factoriser les expressions suivantes (sans effectuer de calcul).
A=7 x 5+ 7 x 2 -3 × 7
B = 9 x a + 9 x 5
C = 10 × 4 - 4 x 3 + 4 x 1
D = 2a - 6
E = 6 × 4,3 - 1 x 6 + 6 x 6
F = 4 × 5 - 4
G=a × 4 – 4 x b
H = 3p – np + pp
A=7 x 5+ 7 x 2 -3 × 7
B = 9 x a + 9 x 5
C = 10 × 4 - 4 x 3 + 4 x 1
D = 2a - 6
E = 6 × 4,3 - 1 x 6 + 6 x 6
F = 4 × 5 - 4
G=a × 4 – 4 x b
H = 3p – np + pp
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