For which values of $k$ does the quadratic $kx^2 - 3kx + 4k + 7 = 0$ have real roots?
Question:
For which values of $k$ does the quadratic $kx^2 - 3kx + 4k + 7 = 0$ have real roots?
Answer:
Let's think step by step.

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For which values of $k$ does the quadratic $kx^2 - 3kx + 4k + 7 = 0$ have real roots?
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