Let $a$ and $b$ be the real roots of
\[x^4 - 4x - 1 = 0.\]Find $ab + a + b.$
Question:
Let $a$ and $b$ be the real roots of
\[x^4 - 4x - 1 = 0.\]Find $ab + a + b.$
Answer:
Let's think step by step.

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Let $a$ and $b$ be the real roots of
\[x^4 - 4x - 1 = 0.\]Find $ab + a + b.$
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