Bonsoir
Pour les exercices 51 et 52, factoriser chaque expression51:
A= a^2 + 3a
A = a * a + 3 * a
A = a(a + 3)
B = 4b^2 - 12
B = 4 * b^2 - 4 * 3
B = 4(b^2 - 3)
52: A= 2t^2 - 3t
A = t * 2t - t * 3
A = t(2t - 3)
B= 4x^2 + 20x
B = 4x * x + 4x * 5
B = 4x(x + 5)