Question

Qual o valor de (3a+y).(3a+y) e de (3a-y).(3a-y)

Answer 1

Resposta:

$(3a + y).(3a + y) \\ 9a + 3ay + 3ay + {y}^{2} \\ 9a + 6ay + {y}^{2} \\ \\ (3a - y).(3a - y) \\ 9a - 3ay - 3ay - {y}^{2} \\ 9a - 6ay - {y}^{2}$