Bonsoir,
Factoriser:
A = 2a + 2b
A = 2*a + 2*b
A = 2(a + b)
B = 5*x + 5*3
B = 5(x + 3)
C = 7y + 28
C = 7*y + 7*4
C = 7(y + 4)
D = x² + 3x
D = x*x + x*3
D = x(x + 3)
E = 3t² + 3x
E = 3*t² + 3*x
E = 3(t² + x)
F = (3t)² + 9t
F = 9t² + 9t
F = 9*t² + 9*t
F = 9(t² + t)
Bonne soirée.