3 The quadratic equation
$$2 x ^ { 2 } + 4 x + 3 = 0$$
has roots \(\alpha\) and \(\beta\).
- Write down the values of \(\alpha + \beta\) and \(\alpha \beta\).
- Show that \(\alpha ^ { 2 } + \beta ^ { 2 } = 1\).
- Find the value of \(\alpha ^ { 4 } + \beta ^ { 4 }\).