If $m$ is a real number and $x^2+mx+4$ has two distinct real roots, then what are the possible values of $m$?  Express your answer in interval notation.
Question:
If $m$ is a real number and $x^2+mx+4$ has two distinct real roots, then what are the possible values of $m$?  Express your answer in interval notation.
Answer:
Let's think step by step.

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(-\infty,-4)\cup (4,\infty)
If $m$ is a real number and $x^2+mx+4$ has two distinct real roots, then what are the possible values of $m$?  Express your answer in interval notation.
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