What is the constant term in the expansion of $\left(\sqrt{x}+\dfrac5x\right)^{9}$?
Question:
What is the constant term in the expansion of $\left(\sqrt{x}+\dfrac5x\right)^{9}$?
Answer:
Let's think step by step.

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What is the constant term in the expansion of $\left(\sqrt{x}+\dfrac5x\right)^{9}$?
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