For two real values of $n$, the equation $9x^2+nx+36=0$ has exactly one solution in $x$. What is the positive value of $n$?
Question:
For two real values of $n$, the equation $9x^2+nx+36=0$ has exactly one solution in $x$. What is the positive value of $n$?
Answer:
Let's think step by step.

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For two real values of $n$, the equation $9x^2+nx+36=0$ has exactly one solution in $x$. What is the positive value of $n$?
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