Répondre :
A = y(y - 1)
A = y * y + y * (-1)
A = y² - y
B = 5(10 + x)
B = 5 * 10 + 5 * x
B = 50 + 5x
C = a(a + 5a)
C = a * a + a * 5a
C = a² + 5a²
C = 6a²
A = y(y - 1)
A = y * y + y * (-1)
A = y² - y
B = 5(10 + x)
B = 5 * 10 + 5 * x
B = 50 + 5x
C = a(a + 5a)
C = a * a + a * 5a
C = a² + 5a²
C = 6a²