What is the greatest possible value of $a$ in the system of equations $5a + 2b = 0$ and $ab = -10$?
Question:
What is the greatest possible value of $a$ in the system of equations $5a + 2b = 0$ and $ab = -10$?
Answer:
Let's think step by step.

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What is the greatest possible value of $a$ in the system of equations $5a + 2b = 0$ and $ab = -10$?
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